{"schema":"threatline.record/2","record":{"id":"CVE-2026-107678","aliases":[],"summary":"FFmpeg through 9.0.2 Stack Exhaustion via Recursive Free of pssh Boxes","details":"FFmpeg through 9.0.2 contains a stack exhaustion vulnerability in av_encryption_init_info_free() in libavutil/encryption_info.c, which recursively frees AVEncryptionInitInfo linked lists built by the MOV demuxer's mov_read_pssh(). Attackers can supply a crafted MP4 file with tens of thousands of small pssh boxes to exhaust the stack and crash the process, while also causing quadratic CPU consumption.","categories":["Libraries & packages"],"product":"FFmpeg","vendor":"FFmpeg","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-107678","source_modified_at":"2026-10-08T17:51:49.706Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"FFmpeg","vendor":"FFmpeg","versions":[{"version":"0","lessThanOrEqual":"9.0.2","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":5.7,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00094,"percentile":0.00561,"score_date":"2026-10-23"},"published_at":"2026-10-08T15:28:43.274Z","modified_at":"2026-10-08T17:51:49.706Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-107678","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-08T17:51:49.706Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-107678","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24593","tags":["issue-tracking"]},{"source":"CVE List","url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/encryption_info.c#L219-L231","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavformat/mov.c#L8070","tags":["technical-description"]},{"source":"CVE List","url":"https://ffmpeg.org/","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-stack-exhaustion-via-recursive-free-of-pssh-boxes","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-08T15:35:36.075279Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-08T17:51:49.706Z","content_hash":"72184ef7c6f94995e283d95d429a38839bb122371d56a78552043f62230680ce"}}