Vulnerability · Published Oct 25, 2026 · Assigned by VulnCheck

CVE-2026-116176vLLM 0.9.2 before 0.24.0 SSRF via X-Request-Id in P2pNcclConnector

High 8.2

In plain English

A high-severity server-side request forgery in vllm from vllm-project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.2High

Exploit odds (30 days)0.3%top 75.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	vllm	0.24.0	PYSEC-2026-4351

Affected products (as reported)

Vendor	Product	Versions
vllm-project	vllm	0.9.2 – before 0.24.0

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

References

GitHub Security Advisory (GHSA-vfp2-c8pq-v6h6) vendor-advisory
VulnCheck Advisory: vLLM 0.9.2 before 0.24.0 SSRF via X-Request-Id in P2pNcclConnector third-party-advisory