CVE-2026-94624: vLLM denial of service in P2P KV offloading via kv_transfer_params

Summary

vLLM through 0.29.0 has a denial of service flaw in peer-to-peer KV offloading when OffloadingConnector uses TieringOffloadingSpec with a peer-to-peer secondary tier. Attackers can supply arbitrary remote host and port values in kv_transfer_params to create unreachable peer sessions, which retain ZeroMQ sockets until the context quota is exhausted. The resulting uncaught ZMQError crashes EngineCore and halts all inference.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Affected packages in the Exposure Registry

Matched by package name and ecosystem. Each entry shows whether the package delegates to a language model and how many tracked packages depend on it.

• vllmPyPILLM dependency since 2023-08-25 · 15 tracked dependents

Topics

• Inference infrastructure

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