CVE-2026-54233 Details
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.
A denial-of-service vulnerability has been identified in vLLM, an inference and serving engine for large language models. The issue arises in the '/v1/audio/transcriptions' endpoint, which prior to version 0.23.1rc0, imposed a limit on the compressed upload size but not on the decoded PCM output. This flaw allows a 25MB OPUS file to expand to approximately 14.9GB of float32 PCM during decoding, leading to excessive memory usage on the server.
Users can upgrade to vLLM version 0.23.1rc0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 23, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/vllm-project/vllm/pull/44970 | [email protected] | Issue TrackingPatch |
| https://github.com/vllm-project/vllm/security/advisories/GHSA-6pr9-rp53-2pmc | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-409 | Improper Handling of Highly Compressed Data (Data Amplification) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| vllm vllm | < 0.23.1 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 24, 2026 | Initial Analysis | [email protected] |
| Jun 23, 2026 | CVE Modified | CISA-ADP |
| Jun 22, 2026 | New CVE Received | [email protected] |