vLLM is an inference and serving engine for large language models. Prior to 0.30.0, OpenAI-compatible request models accept a non-empty cache_salt value without enforcing the character and length restrictions required by the IPCCacheServerKey consumer in LMCache-MP. On deployments using the LMCache-MP connector, a salt that contains a forbidden character or exceeds the permitted length can raise an uncaught ValueError during scheduler cache lookup, causing EngineCore to terminate and denying service to all concurrent users. This issue is fixed in version 0.30.0.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/vllm-project/vllm/commit/e962733e08d10f7ca65dac4df99e116460b8b174 Patch
- https://github.com/vllm-project/vllm/pull/51444 Issue Tracking, Patch
- https://github.com/vllm-project/vllm/security/advisories/GHSA-2823-qmq8-rwvj Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.5 · vllmNVD modified 2026-10-08 01:28
Affected (CPE criteria) 1
cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*
References 4
- https://github.com/vllm-project/vllm/commit/e962733e08d10f7ca65dac4df99e116460b8b174 Patch
- https://github.com/vllm-project/vllm/pull/51444 Issue Tracking, Patch
- https://github.com/vllm-project/vllm/releases/tag/v0.30.0 Release Notes
- https://github.com/vllm-project/vllm/security/advisories/GHSA-2823-qmq8-rwvj Mitigation, Vendor Advisory