MEDIUM5.3
PYSEC-2026-3999
Quick fix
PYSEC-2026-3999 — vllm: upgrade to the fixed version with the command below.
pip install --upgrade 'vllm>=0.30.0'Details
vLLM through 0.29.0 contains a memory corruption vulnerability in the Triton _bincount_kernel where prompt token IDs index the penalty prompt-presence bitset without bounds checking against vocabulary size. Attackers can submit multimodal audio requests with tokens equal to vocabulary size, causing out-of-bounds writes that corrupt concurrent requests' sampler state and alter repetition penalty behavior.
Are you affected?
Enter the version of the package you're using.
Affected packages
References
- https://github.com/vllm-project/vllm/blob/v0.29.0/vllm/v1/worker/gpu/sample/penalties.py#L241-L255[WEB]
- https://github.com/vllm-project/vllm/blob/v0.29.0/vllm/v1/worker/gpu/sample/penalties.py#L33-L37[WEB]
- https://www.vulncheck.com/advisories/vllm-through-0.29.0-adjacent-request-sampler-state-corruption-via-unvalidated-prompt-token-ids[ADVISORY]
- https://github.com/vllm-project/vllm/pull/49081[FIX]
- https://github.com/vllm-project/vllm[PACKAGE]