What’s Vulnerable › Vulnerabilities

CVE-2026-54233: vLLM: OOM Denial of Service via Audio Decompression Bomb

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-22 · updated 2026-10-25
• Weakness: CWE-409

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.

Affected products

• vllm-project vllm: before 0.23.1 — fixed in 0.23.1

How to fix

Upgrade to a fixed version: vllm-project vllm 0.23.1. Check the vendor advisory for mitigations.

References

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

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