{"id":"CVE-2026-61627","aliases":[],"cve":{"records":[{"id":"CVE-2026-61627","source":"GitHub_M","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-07-10T17:38:57.110Z","published":"2026-10-30T14:55:45.500Z","modified":"2026-10-30T15:51:10.521Z"}],"publishers":[{"name":"GitHub_M","role":"CNA","organizationId":"a0819718-46f1-4df5-94e2-005712e83aaa","modified":"2026-10-30T14:55:45.500Z"},{"name":"CVE","role":"ADP","organizationId":"af854a3a-2127-422b-91ae-364da2661108","modified":"2026-10-30T15:10:45.937Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-30T15:51:10.521Z"}],"references":[{"url":"https://github.com/libass/libass/security/advisories/GHSA-pjjp-65r7-ppgm","tags":["x_refsource_CONFIRM"],"source":"GitHub_M"},{"url":"https://github.com/libass/libass/commit/f2ef59755292bc4bb950ef22710e18a5487c399d","tags":["x_refsource_MISC"],"source":"GitHub_M"},{"url":"https://github.com/libass/libass/releases/tag/0.17.5","tags":["x_refsource_MISC"],"source":"GitHub_M"},{"url":"https://lists.debian.org/debian-lts-announce/2026/09/msg00004.html","tags":[],"source":"CVE"}],"weaknesses":[{"id":"CWE-125","description":"CWE-125: Out-of-bounds Read","source":"GitHub_M"},{"id":"CWE-787","description":"CWE-787: Out-of-bounds Write","source":"GitHub_M"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-30T15:34:57.627086Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"libass: Out-of-bounds read and write in wrap_lines_measure","titleSource":"GitHub_M","descriptionSource":"GitHub_M","description":"libass is a portable subtitle renderer for the `ASS`/SSA (Advanced Substation Alpha/Substation Alpha) subtitle format. Prior to 0.17.5, libass can overread and overwrite the glyph array in `wrap_lines_measure` while rendering malicious `ASS` content. In `wrap modes other than two`, a final line ending with a literal backslash-n sequence and otherwise consisting only of such sequences or spaces can remain after early trimming and make the line-measurement loops overshoot by one glyph. When the total text size exactly matches the allocated glyph-array capacity, the first loop reads an uninitialized 32-bit fixed-point `pos.x` value, although that value is not subsequently used. The second loop writes `pos.x` and `pos.y` beyond the array, zeroing the first and adding an attacker-controllable offset to the second. No actual exploitation beyond possible denial of service is known; broader exploitation is theoretical and constrained by the addresses, limited writes, and ASLR. This issue is fixed in version 0.17.5.","score":7.3,"severity":"high","published":"2026-10-30T14:55:45.500Z","modified":"2026-10-30T15:51:10.521Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"libass","name":"libass","platforms":[],"versions":[{"version":"< 0.17.5","status":"affected"}],"cpes":[],"source":"GitHub_M","url":"https://www.cve.org/CVERecord?id=CVE-2026-61627"}],"remediation":[],"references":["https://github.com/libass/libass/security/advisories/GHSA-pjjp-65r7-ppgm","https://github.com/libass/libass/commit/f2ef59755292bc4bb950ef22710e18a5487c399d","https://github.com/libass/libass/releases/tag/0.17.5","https://lists.debian.org/debian-lts-announce/2026/09/msg00004.html"],"sources":[{"name":"CVE","id":"CVE-2026-61627","modified":"2026-10-30T15:51:10.521Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-61627"}],"assessments":[{"source":"GitHub_M","vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":7.3}],"sourceAffected":[],"observedAt":"2026-10-30T16:31:00.920Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T10:00:31.629Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-30T16:35:32.935Z","attemptedAt":"2026-10-30T16:35:32.935Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-10-30T16:35:32.935Z","attemptedAt":"2026-10-30T16:35:32.935Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-30T16:35:32.935Z","attemptedAt":"2026-10-30T16:35:32.935Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-10-30T16:35:32.935Z","attemptedAt":"2026-10-30T16:35:32.935Z"}],"evidence":[{"source":"NVD","id":"CVE-2026-61627","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61627","modified":"2026-10-30T16:17:57.380","score":7.3,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","checkedAt":"2026-10-30T16:35:32.935Z"},{"source":"ENISA EUVD","id":"EUVD-2026-114007","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-114007","modified":"Oct 30, 2026, 2:55:45 PM","score":7.3,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","checkedAt":"2026-10-30T16:35:32.935Z"}],"aiSummary":null}