{"id":"CVE-2026-56002","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-56002","summary":"libXfont2 PCF Font Parsing Heap Buffer Overflow","details":"A heap bufferflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.0.8  allows attackers authenticated as X client to execute code within the X server.","published":"2026-07-08T09:12:51.480Z","modified":"2026-08-12T16:41:27.569216Z","cvss":{"score":8.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56002.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56002"},{"type":"ADVISORY","url":"https://www.openwall.com/lists/oss-security/2026/07/08/1"},{"type":"FIX","url":"https://gitlab.freedesktop.org/xorg/lib/libxfont/-/commit/b4389e0b1d84a690b819bb27b1439968811a3674"},{"type":"PACKAGE","url":"https://gitlab.freedesktop.org/xorg/lib/libxfont"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T16:41:27.569216Z"}}