CVE-2026-41523

vLLM is an inference and serving engine for large language models (LLMs). Prior to 0.22.0, an assert-based security check in vLLM's activation function loading allows any unauthenticated attacker to achieve arbitrary code execution on the server by publishing a malicious HuggingFace model, when vLLM runs in Python optimized mode (python -O or PYTHONOPTIMIZE=1). This vulnerability is fixed in 0.22.0.
Configurations

Configuration 1 (hide)

cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-22 23:16

Updated : 2026-09-04 13:19


NVD link : CVE-2026-41523

Mitre link : CVE-2026-41523

CVE.ORG link : CVE-2026-41523


JSON object : View

Products Affected

vllm

  • vllm
CWE
CWE-94

Improper Control of Generation of Code ('Code Injection')

CWE-617

Reachable Assertion