{"url":"http://public2.vulnerablecode.io/api/packages/940858?format=json","purl":"pkg:deb/debian/thunderbird@1:91.4.1-1~deb11u1?distro=trixie","type":"deb","namespace":"debian","name":"thunderbird","version":"1:91.4.1-1~deb11u1","qualifiers":{"distro":"trixie"},"subpath":"","is_vulnerable":false,"next_non_vulnerable_version":"1:91.4.1-1","latest_non_vulnerable_version":"1:140.10.0esr-1","affected_by_vulnerabilities":[],"fixing_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/11799?format=json","vulnerability_id":"VCID-1mm2-4b1k-afat","summary":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')\nThe olm_session_describe function in Matrix libolm is vulnerable to a buffer overflow. The Olm session object represents a cryptographic channel between two parties. Therefore, its state is partially controllable by the remote party of the channel. Attackers can construct a crafted sequence of messages to manipulate the state of the receiver's session in such a way that, for some buffer sizes, a buffer overflow happens on a call to olm_session_describe. Furthermore, safe buffer sizes were undocumented. The overflow content is partially controllable by the attacker and limited to ASCII spaces and digits. The known affected products are Element Web And SchildiChat Web.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-44538","reference_id":"","reference_type":"","scores":[{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.80635","published_at":"2026-04-29T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.80503","published_at":"2026-04-01T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.80586","published_at":"2026-04-18T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.80589","published_at":"2026-04-21T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.80615","published_at":"2026-04-24T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.80619","published_at":"2026-04-26T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.80509","published_at":"2026-04-02T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.80531","published_at":"2026-04-04T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.80521","published_at":"2026-04-07T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.8055","published_at":"2026-04-08T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.8056","published_at":"2026-04-09T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.80578","published_at":"2026-04-11T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.80564","published_at":"2026-04-12T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.80556","published_at":"2026-04-13T12:55:00Z"},{"value":"0.01416","scoring_system":"epss","scoring_elements":"0.80585","published_at":"2026-04-16T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-44538"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38496","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38496"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38500","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38500"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38502","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38502"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38503","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38503"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38504","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38504"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38506","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38506"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38507","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38507"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38508","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38508"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38509","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38509"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4126","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4126"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4129","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4129"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43528","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43528"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43529","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43529"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43534","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43534"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43535","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43535"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43536","reference_id":"","refere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vulnerabilities have been found in Mozilla Thunderbird, the worst of which could result in the arbitrary execution of 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developers and community members Andreas Pehrson and Christian Holler reported memory safety bugs present in Thunderbird 91.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-38500.json","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-38500.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-38500","reference_id":"","reference_type":"","scores":[{"value":"0.0109","scoring_system":"epss","scoring_elements":"0.77972","published_at":"2026-04-16T12:55:00Z"},{"value":"0.0109","scoring_system":"epss","scoring_elements":"0.78018","published_at":"2026-04-29T12:55:00Z"},{"value":"0.0109","scoring_system":"epss","scoring_elements":"0.77965","published_at":"2026-04-21T12:55:00Z"},{"value":"0.0109","scoring_system":"epss","scoring_elements":"0.77938","published_at":"2026-04-12T12:55:00Z"},{"value":"0.0109","scoring_system":"epss","scoring_elements":"0.77937","published_at":"2026-04-13T12:55:00Z"},{"value":"0.0109","scoring_system":"epss","scoring_elements":"0.77971","published_at":"2026-04-18T12:55:00Z"},{"value":"0.0109","scoring_system":"epss","scoring_elements":"0.77998","published_at":"2026-04-24T12:55:00Z"},{"value":"0.0109","scoring_system":"epss","scoring_elements":"0.78005","published_at":"2026-04-26T12:55:00Z"},{"value":"0.0149","scoring_system":"epss","scoring_elements":"0.81051","published_at":"2026-04-08T12:55:00Z"},{"value":"0.0149","scoring_system":"epss","scoring_elements":"0.80992","published_at":"2026-04-01T12:55:00Z"},{"value":"0.0149","scoring_system":"epss","scoring_elements":"0.81001","published_at":"2026-04-02T12:55:00Z"},{"value":"0.0149","scoring_system":"epss","scoring_elements":"0.81025","published_at":"2026-04-04T12:55:00Z"},{"value":"0.0149","scoring_system":"epss","scoring_elements":"0.81023","published_at":"2026-04-07T12:55:00Z"},{"value":"0.0149","scoring_system":"epss","scoring_elements":"0.81058","published_at":"2026-04-09T12:55:00Z"},{"value":"0.0149","scoring_system":"epss","scoring_elements":"0.81076","published_at":"2026-04-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-38500"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38496","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38496"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38500","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38500"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38502","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38502"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38503","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38503"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38504","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38504"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38506","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38506"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38507","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38507"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38508","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38508"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38509","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38509"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4126","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4126"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4129","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4129"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43528","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43528"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43529","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43529"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43534","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-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developers and community members Christian Holler, Valentin Gosu, and Andrew McCreight reported memory safety bugs present in Firefox 93 and Firefox ESR 91.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-43534.json","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-43534.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-43534","reference_id":"","reference_type":"","scores":[{"value":"0.00754","scoring_system":"epss","scoring_elements":"0.73182","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00754","scoring_system":"epss","scoring_elements":"0.73202","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00754","scoring_system":"epss","scoring_elements":"0.73172","published_at":"2026-04-01T12:55:00Z"},{"value":"0.01193","scoring_system":"epss","scoring_elements":"0.7893","published_at":"2026-04-29T12:55:00Z"},{"value":"0.01193","scoring_system":"epss","scoring_elements":"0.78913","published_at":"2026-04-26T12:55:00Z"},{"value":"0.01193","scoring_system":"epss","scoring_elements":"0.78906","published_at":"2026-04-24T12:55:00Z"},{"value":"0.01193","scoring_system":"epss","scoring_elements":"0.78854","published_at":"2026-04-13T12:55:00Z"},{"value":"0.01193","scoring_system":"epss","scoring_elements":"0.78864","published_at":"2026-04-12T12:55:00Z"},{"value":"0.01193","scoring_system":"epss","scoring_elements":"0.78883","published_at":"2026-04-16T12:55:00Z"},{"value":"0.01193","scoring_system":"epss","scoring_elements":"0.7888","published_at":"2026-04-18T12:55:00Z"},{"value":"0.01193","scoring_system":"epss","scoring_elements":"0.78877","published_at":"2026-04-21T12:55:00Z"},{"value":"0.0163","scoring_system":"epss","scoring_elements":"0.8188","published_at":"2026-04-09T12:55:00Z"},{"value":"0.0163","scoring_system":"epss","scoring_elements":"0.81847","published_at":"2026-04-07T12:55:00Z"},{"value":"0.0163","scoring_system":"epss","scoring_elements":"0.81874","published_at":"2026-04-08T12:55:00Z"},{"value":"0.0163","scoring_system":"epss","scoring_elements":"0.819","published_at":"2026-04-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-43534"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38496","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38496"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38500","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38500"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38502","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38502"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38503","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38503"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38504","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38504"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38506","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38506"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38507","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38507"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38508","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38508"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38509","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38509"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4126","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4126"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4129","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4129"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43528","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43528"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43529","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43529"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43534","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?nam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VE-2021-43534"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43535","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43535"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43536","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43536"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43537","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43537"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43538","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43538"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43539","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43539"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43541","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43541"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43542","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43542"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43543","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43543"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43545","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43545"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43546","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43546"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44538","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44538"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2019626","reference_id":"2019626","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2019626"},{"reference_url":"https://www.mozilla.org/en-US/security/advisories/mfsa2021-43","reference_id":"mfsa2021-43","reference_type":"","scores":[{"value":"high","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2021-43"},{"reference_url":"https://www.mozilla.org/en-US/security/advisories/mfsa2021-49","reference_id":"mfsa2021-49","reference_type":"","scores":[{"value":"high","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2021-49"},{"reference_url":"https://www.mozilla.org/en-US/security/advisories/mfsa2021-50","reference_id":"mfsa2021-50","reference_type":"","scores":[{"value":"high","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2021-50"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:4116","reference_id":"RHSA-2021:4116","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:4116"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:4123","reference_id":"RHSA-2021:4123","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:4123"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:4130","reference_id":"RHSA-2021:4130","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:4130"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:4132","reference_id":"RHSA-2021:4132","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:4132"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:4133","reference_id":"RHSA-2021:4133","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:4133"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:4134","reference_id":"RHSA-2021:4134","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:4134"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:4605","reference_id":"RHSA-2021:4605","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:4605"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:4607","reference_id":"RHSA-2021:4607","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:4607"},{"reference_url":"https://usn.ubuntu.com/5248-1/","reference_id":"USN-5248-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/5248-1/"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/a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This gave the false impression that the additional contents\nwere also covered by the digital signature. Starting with Thunderbird version 91.4.1,\nonly the signature that belongs to the top level MIME part will be considered for\nthe displayed status.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-4126","reference_id":"","reference_type":"","scores":[{"value":"0.00337","scoring_system":"epss","scoring_elements":"0.56532","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00337","scoring_system":"epss","scoring_elements":"0.56461","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00337","scoring_system":"epss","scoring_elements":"0.56599","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00337","scoring_system":"epss","scoring_elements":"0.56577","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00337","scoring_system":"epss","scoring_elements":"0.56608","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00337","scoring_system":"epss","scoring_elements":"0.56607","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00337","scoring_system":"epss","scoring_elements":"0.56578","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00337","scoring_system":"epss","scoring_elements":"0.56514","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00337","scoring_system":"epss","scoring_elements":"0.56558","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00337","scoring_system":"epss","scoring_elements":"0.56579","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00337","scoring_system":"epss","scoring_elements":"0.56609","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00337","scoring_system":"epss","scoring_elements":"0.56613","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00337","scoring_system":"epss","scoring_elements":"0.56623","published_at":"2026-04-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-4126"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38496","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38496"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38500","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38500"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38502","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38502"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38503","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38503"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38504","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38504"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38506","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38506"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38507","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38507"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38508","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38508"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38509","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38509"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4126","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4126"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4129","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4129"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43528","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43528"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43529","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43529"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43534","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43534"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43535","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43535"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43536","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43536"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43537","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43537"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43538","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43538"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43539","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43539"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43541","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43541"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43542","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43542"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43543","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43543"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43545","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43545"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43546","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43546"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44538","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44538"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://www.mozilla.org/en-US/security/advisories/mfsa2021-55","reference_id":"mfsa2021-55","reference_type":"","scores":[{"value":"none","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2021-55"},{"reference_url":"https://www.mozilla.org/security/advisories/mfsa2021-55/","reference_id":"mfsa2021-55","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-04-16T15:36:07Z/"}],"url":"https://www.mozilla.org/security/advisories/mfsa2021-55/"},{"reference_url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1732310","reference_id":"show_bug.cgi?id=1732310","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-04-16T15:36:07Z/"}],"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1732310"},{"reference_url":"https://usn.ubuntu.com/5246-1/","reference_id":"USN-5246-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/5246-1/"},{"reference_url":"https://usn.ubuntu.com/5248-1/","reference_id":"USN-5248-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/5248-1/"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/940858?format=json","purl":"pkg:deb/debian/thunderbird@1:91.4.1-1~deb11u1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/thunderbird@1:91.4.1-1~deb11u1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/940860?format=json","purl":"pkg:deb/debian/thunderbird@1:91.4.1-1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/thunderbird@1:91.4.1-1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/940802?format=json","purl":"pkg:deb/debian/thunderbird@1:115.12.0-1~deb11u1?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-2fqb-r5zb-a7dp"},{"vulnerability":"VCID-3kv6-c148-nkhq"},{"vulnerability":"VCID-59d3-343b-e3aw"},{"vulnerability":"VCID-61r1-arbe-dke4"},{"vulnerability":"VCID-7jt2-zr49-7ye5"},{"vulnerability":"VCID-95et-ezmb-buau"},{"vulnerability":"VCID-9nbw-7c9e-13af"},{"vulnerability":"VCID-av7u-3g4m-mugm"},{"vulnerability":"VCID-bwth-uepr-z7a3"},{"vulnerability":"VCID-cjsm-7gxr-8ygw"},{"vulnerability":"VCID-d16s-p141-qbft"},{"vulnerability":"VCID-fxjm-ywug-f3d5"},{"vulnerability":"VCID-hk2m-rbdy-nqhc"},{"vulnerability":"VCID-ma29-qa7e-9qb4"},{"vulnerability":"VCID-nge1-4cvg-zqb2"},{"vulnerability":"VCID-nyum-jpbc-abew"},{"vulnerability":"VCID-p6yz-xs58-u3gm"},{"vu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vulnerabilities have been found in Mozilla Thunderbird, the worst of which could result in the arbitrary execution of code.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-43539.json","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-43539.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-43539","reference_id":"","reference_type":"","scores":[{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.76663","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.76578","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.7662","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.76624","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.76612","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.76644","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.7665","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.76522","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.76527","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.76555","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.76537","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.76569","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.7658","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.76606","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.76585","published_at":"2026-04-12T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-43539"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38496","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38496"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38500","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38500"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38502","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38502"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38503","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38503"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38504","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38504"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38506","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38506"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38507","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38507"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38508","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38508"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38509","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38509"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4126","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4126"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4129","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4129"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43528","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43528"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43529","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43529"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43534","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.c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vulnerabilities have been found in Mozilla Thunderbird, the worst of which could result in the arbitrary execution of 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ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the MITM. If an unprotected authentication method was configured, the MITM could obtain the authentication credentials, 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