Medium severity · published Jun 22, 2026
CVE-2026-54233
vLLM: OOM Denial of Service via Audio Decompression Bomb
6.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VL
vllm · vllm-project
< 0.23.1rc0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-54233
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-54233
Issue Tracking
https://github.com/vllm-project/vllm/pull/44970
Third Party Advisory
https://github.com/vllm-project/vllm/security/advisories/GHSA-6pr9-rp53-2pmc
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