{"id":"CVE-2021-3518","aliases":["GHSA-v4f8-2847-rwm7"],"url":"https://o3.security/vulnerability/CVE-2021-3518","summary":"Nokogiri Implements libxml2 version vulnerable to use-after-free","details":"There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability.","published":"2021-05-18T12:15:08.043Z","modified":"2026-08-07T17:02:19.148446Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"RubyGems","name":"nokogiri","fixedVersion":"1.11.4"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpujul2022.html"},{"type":"ADVISORY","url":"http://seclists.org/fulldisclosure/2021/Jul/54"},{"type":"ADVISORY","url":"http://seclists.org/fulldisclosure/2021/Jul/55"},{"type":"ADVISORY","url":"http://seclists.org/fulldisclosure/2021/Jul/58"},{"type":"ADVISORY","url":"http://seclists.org/fulldisclosure/2021/Jul/59"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/05/msg00008.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202107-05"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210625-0002/"},{"type":"ADVISORY","url":"https://support.apple.com/kb/HT212601"},{"type":"ADVISORY","url":"https://support.apple.com/kb/HT212602"},{"type":"ADVISORY","url":"https://support.apple.com/kb/HT212604"},{"type":"ADVISORY","url":"https://support.apple.com/kb/HT212605"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1954242"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuoct2021.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T17:02:19.148446Z"}}