| Component | vLLM |
| Severity | medium (CVSS 6.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| Published (NVD) | 2026-06-22 |
| Last modified | 2026-06-24 |
| Affected versions | vllm < 0.23.1 |
| Fixed in | 0.23.1 |
| Weakness | CWE-409 |
| CISA KEV | not listed |
NVD 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.
What to do
- Upgrade vLLM to
0.23.1or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-54233
- https://github.com/vllm-project/vllm/pull/44970
- https://github.com/vllm-project/vllm/security/advisories/GHSA-6pr9-rp53-2pmc
Read more
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