CVE-2026-54233CWE-409
vLLM: OOM Denial of Service via Audio Decompression Bomb
Medium · published June 22, 2026
What it is
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.
The record
Technical detail
- CVSS v3.1
- 6.5 · MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS v4.0
- Not supplied
- EPSS
- 0.00422 · 35.4th percentile
- Weakness
- CWE-409 · Improper Handling of Highly Compressed Data (Data Amplification)
- Published
- 2026-06-22T22:10Z
EPSS history
Timeline