CVE-2026-116176

HighCVSS 8.2/10Last modified Nov 4, 2026

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.

Metrics

CVSS 3.1 8.2/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

Weakness enumeration

CWE-918

Affected software

Vendor	Product	Versions
vllm-project	vllm	>= 0.9.2, < 0.24.0

References

https://github.com/vllm-project/vllm/security/advisories/GHSA-vfp2-c8pq-v6h6Vendor Advisory
https://www.vulncheck.com/advisories/vllm-0.9.2-before-0.24.0-ssrf-via-x-request-id-in-p2pncclconnectorThird Party Advisory

Timeline

Published: Oct 25, 2026
Last modified: Nov 4, 2026
NVD status: Analyzed

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