SSRF in Vllm-Project Vllm
CVE-2026-116176
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/vllm-project/vllm/security/advisories/GHSA-vfp2-c8pq-v6h6 (vendor-advisory)
- www.vulncheck.com/advisories/vllm-0.9.2-before-0.24.0-ssrf-via-x-request-id-in-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116176?
- CVE-2026-116176 is a high-severity vulnerability in Vllm-Project Vllm, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.2/10. Published 2026-10-25.
- How severe is CVE-2026-116176?
- High severity. CVSS v3 base score is 8.2 out of 10.