HIGH8.7
PYSEC-2026-4006
Quick fix
PYSEC-2026-4006 — 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 denial of service vulnerability in P2P KV offloading when OffloadingConnector is configured with TieringOffloadingSpec and a peer-to-peer secondary tier. Attackers can supply arbitrary remote host and port values in kv_transfer_params to create unreachable peer sessions that retain ZeroMQ sockets until the context quota is exhausted, causing an uncaught ZMQError that crashes EngineCore and stops all inference.
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/kv_offload/tiering/p2p/control/zmq.py#L240-L260[WEB]
- https://github.com/vllm-project/vllm/blob/v0.29.0/vllm/v1/kv_offload/tiering/p2p/manager.py#L667-L677[WEB]
- https://www.vulncheck.com/advisories/vllm-through-0.29.0-denial-of-service-via-unbounded-p2p-kv-offloading-sessions[ADVISORY]
- https://github.com/vllm-project/vllm/pull/51504[FIX]
- https://github.com/vllm-project/vllm[PACKAGE]