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of Untrusted Data\nIn logback version 1.2.9 and prior versions, an attacker with the required privileges to edit configurations files could craft a malicious configuration allowing to execute arbitrary code loaded from LDAP servers.","references":[{"reference_url":"http://logback.qos.ch/news.html","reference_id":"","reference_type":"","scores":[{"value":"6.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://logback.qos.ch/news.html"},{"reference_url":"http://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-Site-Scripting-Command-Injection.html","reference_id":"","reference_type":"","scores":[{"value":"6.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-Site-Scripting-Command-Injection.html"},{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-42550.json","reference_id":"","reference_type":"","scores":[{"value":"6.6","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-42550.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-42550","reference_id":"","reference_type":"","scores":[{"value":"0.02729","scoring_system":"epss","scoring_elements":"0.85951","published_at":"2026-04-13T12:55:00Z"},{"value":"0.02729","scoring_system":"epss","scoring_elements":"0.85914","published_at":"2026-04-07T12:55:00Z"},{"value":"0.02729","scoring_system":"epss","scoring_elements":"0.85885","published_at":"2026-04-01T12:55:00Z"},{"value":"0.02729","scoring_system":"epss","scoring_elements":"0.85933","published_at":"2026-04-08T12:55:00Z"},{"value":"0.02729","scoring_system":"epss","scoring_elements":"0.85943","published_at":"2026-04-09T12:55:00Z"},{"value":"0.02729","scoring_system":"epss","scoring_elements":"0.85958","published_at":"2026-04-11T12:55:00Z"},{"value":"0.02729","scoring_system":"epss","scoring_elements":"0.85956","published_at":"2026-04-12T12:55:00Z"},{"value":"0.02729","scoring_system":"epss","scoring_elements":"0.85912","published_at":"2026-04-04T12:55:00Z"},{"value":"0.02729","scoring_system":"epss","scoring_elements":"0.85896","published_at":"2026-04-02T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-42550"},{"reference_url":"https://cert-portal.siemens.com/productcert/pdf/ssa-371761.pdf","reference_id":"","reference_type":"","scores":[{"value":"6.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-371761.pdf"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42550","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42550"},{"reference_url":"http://seclists.org/fulldisclosure/2022/Jul/11","reference_id":"","reference_type":"","scores":[{"value":"6.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://seclists.org/fulldisclosure/2022/Jul/11"},{"reference_url":"https://github.com/cn-panda/logbackRceDemo","reference_id":"","reference_type":"","scores":[{"value":"6.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/cn-panda/logbackRceDemo"},{"reference_url":"https://github.com/qos-ch/logback","reference_id":"","reference_type":"","scores":[{"value":"6.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/qos-ch/logback"},{"reference_url":"https://github.com/qos-ch/logback/blob/1502cba4c1dfd135b2e715bc0cf80c0045d4d128/logback-site/src/site/pages/news.html","reference_id":"","reference_type":"","scores":[{"value":"6.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/qos-ch/logback/blob/1502cba4c1dfd135b2e715bc0cf80c0045d4d128/logback-site/src/site/pages/news.html"},{"reference_url":"https://github.com/qos-ch/logback/commit/87291079a1de9369ac67e20dc70a8fdc7cc4359c","reference_id":"","reference_type":"","scores":[{"value":"6.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/qos-ch/logback/commit/87291079a1de9369ac67e20dc70a8fdc7cc4359c"},{"reference_url":"https://github.com/qos-ch/logback/commit/ef4f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allows an attacker to instantiate classes already present on the class path\nACE vulnerability in configuration file processing  by QOS.CH logback-core up to and including version 1.5.24 in Java applications, allows an attacker to instantiate classes already present on the class path by compromising an existing logback configuration file.\n\nThe instantiation of a potentially malicious Java class requires that said class is present on the user's class-path. In addition, the attacker must  have write access to a configuration file. However, after successful instantiation, the instance is very likely to be discarded with no further ado.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-1225.json","reference_id":"","reference_type":"","scores":[{"value":"5.0","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-1225.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-1225","reference_id":"","reference_type":"","scores":[{"value":"0.00012","scoring_system":"epss","scoring_elements":"0.01679","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00012","scoring_system":"epss","scoring_elements":"0.01689","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00012","scoring_system":"epss","scoring_elements":"0.01704","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00012","scoring_system":"epss","scoring_elements":"0.01697","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00012","scoring_system":"epss","scoring_elements":"0.01694","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00012","scoring_system":"epss","scoring_elements":"0.01695","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00012","scoring_system":"epss","scoring_elements":"0.01687","published_at":"2026-04-02T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-1225"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-1225","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-1225"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"6.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/qos-ch/logback","reference_id":"","reference_type":"","scores":[{"value":"1.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/qos-ch/logback"},{"reference_url":"https://github.com/qos-ch/logback/commit/1f97ae1844b1be8486e4e9cade98d7123d3eded5","reference_id":"","reference_type":"","scores":[{"value":"1.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/qos-ch/logback/commit/1f97ae1844b1be8486e4e9cade98d7123d3eded5"},{"reference_url":"https://github.com/qos-ch/logback/issues/997","reference_id":"","reference_type":"","scores":[{"value":"1.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/qos-ch/logback/issues/997"},{"reference_url":"https://logback.qos.ch/news.html#1.5.25","reference_id":"","reference_type":"","scores":[{"value":"1.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/S:N/AU:N/RE:M/U:Green"},{"value":"1.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-01-22T14:14:09Z/"}],"url":"https://logback.qos.ch/news.html#1.5.25"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1225","reference_id":"","reference_type":"","scores":[{"value":"1.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1225"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1126748","reference_id":"1126748","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1126748"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2431998","reference_id":"2431998","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2431998"},{"reference_url":"https://github.com/advisories/GHSA-qqpg-mvqg-649v","reference_id":"GHSA-qqpg-mvqg-649v","reference_type":"","scores":[{"value":"LOW","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-qqpg-mvqg-649v"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/61669?format=json","purl":"pkg:maven/ch.qos.logback/logback-core@1.5.25","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/ch.qos.logback/logback-core@1.5.25"}],"aliases":["CVE-2026-1225","GHSA-qqpg-mvqg-649v"],"risk_score":2.2,"exploitability":"0.5","weighted_severity":"4.5","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-pnxr-hj9y-yfd9"}],"fixing_vulnerabilities":[],"risk_score":"4.5","resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/ch.qos.logback/logback-core@1.0.11"}