{"id":"CVE-2026-86140","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-86140","summary":null,"details":"In libxml2 before 2.15.4, xmlSnprintfElements in valid.c has a strcat stack-based buffer overflow.","published":"2026-09-05T04:26:13.860Z","modified":"2026-09-06T03:47:20.613468200Z","cvss":{"score":8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/GNOME/libxml2/commit/d1686f91dbda141a752200419d35639fd6b38340","label":"GNOME/libxml2@d1686f9"},"references":[{"type":"WEB","url":"https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86140.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86140"},{"type":"FIX","url":"https://github.com/GNOME/libxml2/commit/d1686f91dbda141a752200419d35639fd6b38340"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-06T03:47:20.613468200Z"}}