Memory Exhaustion Vulnerability in vLLM Audio Serving by vLLM Project
CVE-2026-114052

8.7HIGH

Key Information:

Vendor

Vllm-project

Status
Vllm
Vendor
CVE Published:
21 October 2026

What is CVE-2026-114052?

A memory exhaustion vulnerability affects versions of vLLM between 0.25.0 and 0.30.0. This issue arises in the MOSS-Audio model serving due to the unbounded caching mechanism employed for processing requests with distinct mm_processor_kwargs values. Unauthenticated attackers are able to exploit this vulnerability by sending uniquely structured or excessively large mel_config values to the /tokenize endpoint. This results in bypassing security measures, such as the --api-key requirement, allowing attackers to exhaust the host's memory resources and potentially crash the API process.

Affected Version(s)

vllm 0.25.0 < 0.31.0

vllm 0.31.0

References

https://github.com/vllm-project/vllm/security/advisories/...
vendor-advisory
https://www.vulncheck.com/advisories/vllm-0.25.0-before-0...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

dohashelby
DarkLight1337
jperezdealgaba
.