CVE-2026-54233

vLLM: OOM Denial of Service via Audio Decompression Bomb

State: Published
Severity: 6.5 Medium
Published: Jun 22, 2026
Updated: Jun 23, 2026
Reserved: Jun 12, 2026

Description

vLLM is an inference and serving engine for large language models (LLMs). Prior to 0.23.1rc0, vLLM's /v1/audio/transcriptions endpoint limits compressed upload size but not decoded PCM output. A 25MB OPUS file expands to ~14.9GB of float32 PCM at decode time. This vulnerability is fixed in 0.23.1rc0.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)

Affected Products

Product	Versions
vllmvllm-project	< 0.23.1rc0Affected

References

https://github.com/vllm-project/vllm/security/advisories/GHSA-6pr9-rp53-2pmc
https://github.com/vllm-project/vllm/pull/44970

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.