Vulnerability Description
vLLM is an inference and serving engine for large language models. From 0.22.0 to 0.23.0, the /v1/audio/transcriptions and /v1/audio/translations routes call request.file.read() to fully materialize an uploaded audio file into memory before vLLM checks the documented VLLM_MAX_AUDIO_CLIP_FILESIZE_MB compressed upload size limit (default 25 MB) later in the speech-to-text preprocessing step, so an API caller who can reach those routes can submit an oversized multipart upload and cause vLLM to allocate memory proportional to the uploaded file size before the request is rejected as too large, creating memory pressure or terminating the process depending on deployment resource limits. This issue is fixed in version 0.24.0.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vllm | Vllm | >= 0.22.0, < 0.24.0 |
Related Weaknesses (CWE)
References
- https://github.com/vllm-project/vllm/commit/b997071ec493765abbed990c65843ed05e47Patch
- https://github.com/vllm-project/vllm/pull/45510Issue TrackingPatch
- https://github.com/vllm-project/vllm/security/advisories/GHSA-v82g-2437-67m2Vendor Advisory
- https://github.com/vllm-project/vllm/security/advisories/GHSA-v82g-2437-67m2Vendor Advisory
FAQ
What is CVE-2026-55646?
CVE-2026-55646 is a vulnerability with a CVSS score of 6.5 (MEDIUM). vLLM is an inference and serving engine for large language models. From 0.22.0 to 0.23.0, the /v1/audio/transcriptions and /v1/audio/translations routes call request.file.read() to fully materialize a...
How severe is CVE-2026-55646?
CVE-2026-55646 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-55646?
Check the references section above for vendor advisories and patch information. Affected products include: Vllm Vllm.