{"id":"JLSEC-2026-1179","summary":"FFmpeg through 8.1.2 contains an out-of-bounds write vulnerability that allows attackers to cause...","details":"FFmpeg through 8.1.2 contains an out-of-bounds write vulnerability that allows attackers to cause heap corruption by supplying a crafted ffconcat file processed with the -safe 0 flag. The TY demuxer's `demux_audio()` function decrements packet size without bounds checking, producing a negative size value that is passed to memcpy() in `shorten_decode_frame()`, where conversion to `size_t` wraps the value to near `SIZE_MAX` and triggers reads beyond the source allocation and writes far beyond the Shorten decoder's bitstream buffer.","modified":"2026-08-07T13:43:40.724150856Z","published":"2026-08-07T13:27:45.313Z","upstream":["CVE-2026-65704","EUVD-2026-48371","GHSA-98cx-cw6c-5pj4"],"database_specific":{"sources":[{"url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-65704","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65704","database_specific":{"status":"Analyzed"},"id":"CVE-2026-65704","imported":"2026-08-07T05:41:14.641Z","modified":"2026-08-07T00:16:40.287Z","published":"2026-07-23T20:17:21.973Z"},{"id":"GHSA-98cx-cw6c-5pj4","imported":"2026-08-07T05:42:36.848Z","modified":"2026-07-23T21:31:09Z","published":"2026-07-23T21:31:02Z","url":"https://api.github.com/advisories/GHSA-98cx-cw6c-5pj4","html_url":"https://github.com/advisories/GHSA-98cx-cw6c-5pj4"},{"imported":"2026-08-07T05:41:15.536Z","modified":"2026-07-28T01:06:12Z","published":"2026-07-23T18:55:41Z","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-48371","html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-48371","id":"EUVD-2026-48371"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/de771bd52774a52d45b0e2c82e56995a1ef40df7"},{"type":"WEB","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23767"},{"type":"WEB","url":"https://github.com/advisories/GHSA-98cx-cw6c-5pj4"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65704"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/ffmpeg-out-of-bounds-write-via-ty-demuxer-and-shorten-decoder"}],"affected":[{"package":{"name":"FFMPEG_jll","ecosystem":"Julia","purl":"pkg:julia/FFMPEG_jll?uuid=b22a6f82-2f65-5046-a5b2-351ab43fb4e5"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"9.0.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1179.json"}},{"package":{"name":"FFMPEG_nogpl_jll","ecosystem":"Julia","purl":"pkg:julia/FFMPEG_nogpl_jll?uuid=a6892c6b-5768-548c-b024-ff8dabf482c5"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"9.0.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1179.json"}},{"package":{"name":"FFplay_jll","ecosystem":"Julia","purl":"pkg:julia/FFplay_jll?uuid=c4dce911-e170-5107-8314-c7bdc6785395"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1179.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/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"}]}