HIGH 8.2 PyPI

CVE-2026-116176

PYSEC-2026-4351 · CVE-2026-116176 · GHSA-vfp2-c8pq-v6h6

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Description

vLLM from 0.9.2 before 0.24.0 contains a server-side request forgery vulnerability that allows API callers to force outbound connections by embedding a decode address in the X-Request-Id header. Attackers can make a P2pNcclConnector prefill worker ZMQ-connect to an attacker host, leaking the NCCL unique_id and KV-cache tensors or blocking the worker.

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