Description
vLLM versions before 0.28.0 fail to validate audio sample rate headers in the transcription endpoint, allowing authenticated clients to bypass duration checks. Attackers can submit forged FLAC headers with inflated sample rates to trigger excessive memory allocation and crash the API server process affecting all tenants.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| vllm-project | vLLM | < 0.28.0 | 0.28.0 |
Advisories 1
- WID-SEC-2026-3083 vllm: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Oct 29, 2026
References
- GitHub Security Advisory (GHSA-99f2-hwrc-gvq8) vendor-advisory
- VulnCheck Advisory: vLLM before 0.28.0 Denial of Service via Audio Header third-party-advisory