CVE-2026-109311vLLM before 0.29.0 Heap Overflow DoS via IAMF Audio Transcription Upload
Updated under an hour ago ()
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It affects vllm-project vllm. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-20
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 12, 2026
Affected products
vllm-project vllm vllm_project:vllm (from the name) | before 0.29.0; 0.29.0 not affected | CNA record |
References
- https://github.com/vllm-project/vllm/security/advisories/GHSA-m52c-39rh-f3gpvendor-advisory
- https://www.vulncheck.com/advisories/vllm-before-0.29.0-heap-overflow-dos-via-iamf-audio-transcription-uploadthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.