Server-side Request Forgery (SSRF) Affecting vllm package, versions [0.9.2,0.24.0)


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.32% (25th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Server-side Request Forgery (SSRF) vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-PYTHON-VLLM-21707826
  • published25 Oct 2026
  • disclosed25 Oct 2026
  • creditmschwarzl

Introduced: 25 Oct 2026

NewCVE-2026-116176  (opens in a new tab)
CWE-918  (opens in a new tab)

How to fix?

Upgrade vllm to version 0.24.0 or higher.

Overview

vllm is an A high-throughput and memory-efficient inference and serving engine for LLMs

Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the P2pNcclConnector KV cache transfer connector, which exposes KV cache contents to network-accessible peers without adequate access control. An unauthenticated remote attacker can read KV cache data transferred between prefill and decode instances, leading to disclosure of cached model inference data and a partial availability impact on the transfer pipeline.

Note: This is only exploitable when the P2pNcclConnector is explicitly configured as the KV transfer connector.

References

CVSS Base Scores

version 4.0
version 3.1