{"url":"http://public2.vulnerablecode.io/api/packages/516354?format=json","purl":"pkg:deb/debian/lz4@0.0~r131-2","type":"deb","namespace":"debian","name":"lz4","version":"0.0~r131-2","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"1.9.3-2","latest_non_vulnerable_version":"1.9.3-2","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/54567?format=json","vulnerability_id":"VCID-7t2r-ezxu-m3aw","summary":"Out-of-bounds Write\nThere's a flaw in lz4. An attacker who submits a crafted file to an application linked with lz4 may be able to trigger an integer overflow, leading to calling of memmove() on a negative size argument, causing an out-of-bounds write and/or a crash. The greatest impact of this flaw is to availability, with some potential impact to confidentiality and integrity as well.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3520.json","reference_id":"","reference_type":"","scores":[{"value":"8.6","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3520.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-3520","reference_id":"","reference_type":"","scores":[{"value":"0.00138","scoring_system":"epss","scoring_elements":"0.33406","published_at":"2026-06-04T12:55:00Z"},{"value":"0.00138","scoring_system":"epss","scoring_elements":"0.33476","published_at":"2026-06-09T12:55:00Z"},{"value":"0.00138","scoring_system":"epss","scoring_elements":"0.33488","published_at":"2026-06-07T12:55:00Z"},{"value":"0.00138","scoring_system":"epss","scoring_elements":"0.33454","published_at":"2026-06-08T12:55:00Z"},{"value":"0.00138","scoring_system":"epss","scoring_elements":"0.33508","published_at":"2026-06-05T12:55:00Z"},{"value":"0.00138","scoring_system":"epss","scoring_elements":"0.33523","published_at":"2026-06-06T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-3520"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1954559","reference_id":"","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1954559"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3520","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3520"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"8.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=987856","reference_id":"987856","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=987856"},{"reference_url":"https://security.archlinux.org/ASA-202105-27","reference_id":"ASA-202105-27","reference_type":"","scores":[],"url":"https://security.archlinux.org/ASA-202105-27"},{"reference_url":"https://security.archlinux.org/AVG-1889","reference_id":"AVG-1889","reference_type":"","scores":[{"value":"Low","scoring_system":"archlinux","scoring_elements":""}],"url":"https://security.archlinux.org/AVG-1889"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3520","reference_id":"CVE-2021-3520","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3520"},{"reference_url":"https://security.gentoo.org/glsa/202406-04","reference_id":"GLSA-202406-04","reference_type":"","scores":[],"url":"https://security.gentoo.org/glsa/202406-04"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:2575","reference_id":"RHSA-2021:2575","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:2575"},{"reference_url":"https://access.redhat.com/errata/RHSA-2022:1345","reference_id":"RHSA-2022:1345","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2022:1345"},{"reference_url":"https://access.redhat.com/errata/RHSA-2022:5606","reference_id":"RHSA-2022:5606","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2022:5606"},{"reference_url":"https://access.redhat.com/errata/RHSA-2022:6407","reference_id":"RHSA-2022:6407","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2022:6407"},{"reference_url":"https://usn.ubuntu.com/4968-1/","reference_id":"USN-4968-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/4968-1/"},{"reference_url":"https://usn.ubuntu.com/4968-2/","reference_id":"USN-4968-2","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/4968-2/"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/516355?format=json","purl":"pkg:deb/debian/lz4@1.8.3-1%2Bdeb10u1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-7t2r-ezxu-m3aw"},{"vulnerability":"VCID-9qxn-r7u8-yfc4"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lz4@1.8.3-1%252Bdeb10u1"},{"url":"http://public2.vulnerablecode.io/api/packages/517494?format=json","purl":"pkg:deb/debian/lz4@1.9.3-2","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lz4@1.9.3-2"}],"aliases":["CVE-2021-3520"],"risk_score":3.9,"exploitability":"0.5","weighted_severity":"7.7","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-7t2r-ezxu-m3aw"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/92539?format=json","vulnerability_id":"VCID-9qxn-r7u8-yfc4","summary":"LZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call LZ4_compress_fast with a large input. (This issue can also lead to data corruption.) NOTE: the vendor states \"only a few specific / uncommon usages of the API are at risk.\"","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-17543.json","reference_id":"","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-17543.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2019-17543","reference_id":"","reference_type":"","scores":[{"value":"0.0159","scoring_system":"epss","scoring_elements":"0.81973","published_at":"2026-06-04T12:55:00Z"},{"value":"0.0159","scoring_system":"epss","scoring_elements":"0.82007","published_at":"2026-06-05T12:55:00Z"},{"value":"0.0159","scoring_system":"epss","scoring_elements":"0.82008","published_at":"2026-06-06T12:55:00Z"},{"value":"0.0159","scoring_system":"epss","scoring_elements":"0.82009","published_at":"2026-06-07T12:55:00Z"},{"value":"0.0159","scoring_system":"epss","scoring_elements":"0.82002","published_at":"2026-06-08T12:55:00Z"},{"value":"0.0159","scoring_system":"epss","scoring_elements":"0.82017","published_at":"2026-06-09T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2019-17543"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17543","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17543"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"7.4","scoring_system":"cvssv3","scoring_elements":"CVSS:3.0/AV:L/AC:H/PR:N/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://bugzilla.redhat.com/show_bug.cgi?id=1765316","reference_id":"1765316","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1765316"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=943680","reference_id":"943680","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=943680"},{"reference_url":"https://access.redhat.com/errata/RHSA-2025:11035","reference_id":"RHSA-2025:11035","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2025:11035"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/517494?format=json","purl":"pkg:deb/debian/lz4@1.9.3-2","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lz4@1.9.3-2"}],"aliases":["CVE-2019-17543"],"risk_score":3.6,"exploitability":"0.5","weighted_severity":"7.3","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-9qxn-r7u8-yfc4"}],"fixing_vulnerabilities":[],"risk_score":"3.9","resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/lz4@0.0~r131-2"}