{"schema":"threatline.record/2","record":{"id":"CVE-2026-109311","aliases":["GHSA-m52c-39rh-f3gp"],"summary":"vLLM before 0.29.0 Heap Overflow DoS via IAMF Audio Transcription Upload","details":"vLLM before 0.29.0 passes uploaded audio to the PyAV/FFmpeg av.open() fallback with only a file-size check, exposing FFmpeg's IAMF parser heap overflow. Authenticated remote attackers can repeatedly upload malformed IAMF containers to /v1/audio/transcriptions, corrupting the heap and crashing the API process.","categories":["Unclassified"],"product":"vllm","vendor":"vllm-project","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109311","source_modified_at":"2026-10-18T11:51:50.426Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"vllm","vendor":"vllm-project","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"0.29.0"},{"version":"0.29.0","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109311","source_modified_at":"2026-10-18T11:51:50.426Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"vllm","ecosystem":null},"version":"0.29.0","basis":"first unaffected version stated in the CVE record"}],"cvss":7.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00422,"percentile":0.35448,"score_date":"2026-10-23"},"published_at":"2026-10-12T16:05:06.956Z","modified_at":"2026-10-18T11:51:50.426Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-109311","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-18T11:51:50.426Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-109311","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-m52c-39rh-f3gp","tags":["exploit"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/vllm-before-0.29.0-heap-overflow-dos-via-iamf-audio-transcription-upload","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-18T11:51:46.666911Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-18T11:51:50.426Z","content_hash":"b22431cd633610dba59d1a698e8e23483537968ea33c32fb95813afa548e29ba"}}