vLLM is an inference and serving engine for large language models. Prior to 0.30.0, Harmony tool continuations submitted through "POST /v1/responses" requests rebuild the next-turn engine input without preserving the cache_salt value, placing the continuation prefix in the global unsalted cache namespace even when the caller enabled salting. On deployments with prefix caching enabled, which is the default, an authenticated tenant who can reconstruct a victim's low-entropy post-tool history can submit the same continuation and use the cached_tokens_per_turn count to determine whether the prefix was previously processed, defeating the intended tenant isolation of salted prefix caching. This issue is fixed in version 0.30.0.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - vLLM is an inference and serving engine for large language models. Prior to 0.30.0, Harmony tool
    continuations submitted through "POST /v1/responses" requests rebuild the next-turn engine input without
    preserving the cache_salt value, placing the continuation prefix in the global unsalted cache namespace
    even when the caller enabled salting. On deployments with prefix caching enabled, which is the default, an
    authenticated tenant who can reconstruct a victim's low-entropy post-tool history can submit the same
    continuation and use the cached_tokens_per_turn count to determine whether the prefix was previously
    processed, defeating the intended tenant isolation of salted prefix caching. This issue is fixed in
    version 0.30.0. (CVE-2026-105752)

ID	Name	Product	Family	Type	Severity
476111	Chainguard: vllm-openai-cuda-13.0: security update to 0.31.0-r0	Tenable Cloud Security	Chainguard Local Security Checks	Local	low
476111	Chainguard: vllm-openai-cuda-13.0: security update to 0.31.0-r0	Tenable Self-Hosted Container Security	Chainguard Local Security Checks	Local	low
472966	SCA: security update for vllm (GHSA-935w-9g4m-p28p)	Tenable Cloud Security	SCA Checks	Local	low
472966	SCA: security update for vllm (GHSA-935w-9g4m-p28p)	Tenable Self-Hosted Container Security	SCA Checks	Local	low

Detections

Analytics

CVE-2026-105752

low

Tenable Plugins

low

low

low

low