CVE-2026-109311
vLLM before 0.29.0 passes uploaded audio to the PyAV/FFmpeg av.open() fallback with only a…
- Risk score
- 46/100
- CVSS
- 6.5 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 12 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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.
- Affected
- See advisory
- Fix
- Upgrade the product to 0.29.0 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.5 medium
References
Original 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.
Last activity 12 Oct 2026. Patch Forecast updates every hour.