{"id":"CVE-2026-109311","revision":"e708a510f4b5400dae331da3f8cacef4","records":[{"revision":"e708a510f4b5400dae331da3f8cacef4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-109311","aliases":[],"title":"vLLM before 0.29.0 Heap Overflow DoS via IAMF Audio Transcription Upload","description":"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.","state":0,"publishedAt":"2026-10-12T16:05:06.956+00:00","modifiedAt":"2026-10-18T11:51:50.426+00:00","affected":[{"ecosystem":"Vendor product","name":"vllm","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"vllm-project\",\n                    \"product\": \"vllm\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:pypi/vllm\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"0.29.0\"\n                        },\n                        {\n                            \"version\": \"0.29.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":7.1,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/vllm-project/vllm/security/advisories/GHSA-m52c-39rh-f3gp","https://www.vulncheck.com/advisories/vllm-before-0.29.0-heap-overflow-dos-via-iamf-audio-transcription-upload"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-109311","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-109311","identifiers":["CVE-2026-109311"]},"retained":false,"historicalAffected":[]}],"coverage":[]}