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Vulnerabilities
Vulnerable Software

Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.007
EPSS Ranking 51.0%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-41523
  • Vllm » Vllm » Version: 0.1.0
    cpe:2.3:a:vllm:vllm:0.1.0
  • Vllm » Vllm » Version: 0.1.1
    cpe:2.3:a:vllm:vllm:0.1.1
  • Vllm » Vllm » Version: 0.1.2
    cpe:2.3:a:vllm:vllm:0.1.2
  • Vllm » Vllm » Version: 0.1.3
    cpe:2.3:a:vllm:vllm:0.1.3
  • Vllm » Vllm » Version: 0.1.4
    cpe:2.3:a:vllm:vllm:0.1.4
  • Vllm » Vllm » Version: 0.1.5
    cpe:2.3:a:vllm:vllm:0.1.5
  • Vllm » Vllm » Version: 0.1.6
    cpe:2.3:a:vllm:vllm:0.1.6
  • Vllm » Vllm » Version: 0.1.7
    cpe:2.3:a:vllm:vllm:0.1.7
  • Vllm » Vllm » Version: 0.10.0
    cpe:2.3:a:vllm:vllm:0.10.0
  • Vllm » Vllm » Version: 0.10.1
    cpe:2.3:a:vllm:vllm:0.10.1
  • Vllm » Vllm » Version: 0.10.1.1
    cpe:2.3:a:vllm:vllm:0.10.1.1
  • Vllm » Vllm » Version: 0.10.2
    cpe:2.3:a:vllm:vllm:0.10.2
  • Vllm » Vllm » Version: 0.11.0
    cpe:2.3:a:vllm:vllm:0.11.0
  • Vllm » Vllm » Version: 0.11.1
    cpe:2.3:a:vllm:vllm:0.11.1
  • Vllm » Vllm » Version: 0.11.2
    cpe:2.3:a:vllm:vllm:0.11.2
  • Vllm » Vllm » Version: 0.12.0
    cpe:2.3:a:vllm:vllm:0.12.0
  • Vllm » Vllm » Version: 0.13.0
    cpe:2.3:a:vllm:vllm:0.13.0
  • Vllm » Vllm » Version: 0.14.0
    cpe:2.3:a:vllm:vllm:0.14.0
  • Vllm » Vllm » Version: 0.14.1
    cpe:2.3:a:vllm:vllm:0.14.1
  • Vllm » Vllm » Version: 0.15.0
    cpe:2.3:a:vllm:vllm:0.15.0
  • Vllm » Vllm » Version: 0.15.1
    cpe:2.3:a:vllm:vllm:0.15.1
  • Vllm » Vllm » Version: 0.15.2
    cpe:2.3:a:vllm:vllm:0.15.2
  • Vllm » Vllm » Version: 0.16.0
    cpe:2.3:a:vllm:vllm:0.16.0
  • Vllm » Vllm » Version: 0.16.1
    cpe:2.3:a:vllm:vllm:0.16.1
  • Vllm » Vllm » Version: 0.17.0
    cpe:2.3:a:vllm:vllm:0.17.0
  • Vllm » Vllm » Version: 0.17.1
    cpe:2.3:a:vllm:vllm:0.17.1
  • Vllm » Vllm » Version: 0.17.2
    cpe:2.3:a:vllm:vllm:0.17.2
  • Vllm » Vllm » Version: 0.18.0
    cpe:2.3:a:vllm:vllm:0.18.0
  • Vllm » Vllm » Version: 0.18.1
    cpe:2.3:a:vllm:vllm:0.18.1
  • Vllm » Vllm » Version: 0.18.2
    cpe:2.3:a:vllm:vllm:0.18.2
  • Vllm » Vllm » Version: 0.19.0
    cpe:2.3:a:vllm:vllm:0.19.0
  • Vllm » Vllm » Version: 0.19.1
    cpe:2.3:a:vllm:vllm:0.19.1
  • Vllm » Vllm » Version: 0.19.2
    cpe:2.3:a:vllm:vllm:0.19.2
  • Vllm » Vllm » Version: 0.2.0
    cpe:2.3:a:vllm:vllm:0.2.0
  • Vllm » Vllm » Version: 0.2.1
    cpe:2.3:a:vllm:vllm:0.2.1
  • Vllm » Vllm » Version: 0.2.2
    cpe:2.3:a:vllm:vllm:0.2.2
  • Vllm » Vllm » Version: 0.2.3
    cpe:2.3:a:vllm:vllm:0.2.3
  • Vllm » Vllm » Version: 0.2.4
    cpe:2.3:a:vllm:vllm:0.2.4
  • Vllm » Vllm » Version: 0.2.5
    cpe:2.3:a:vllm:vllm:0.2.5
  • Vllm » Vllm » Version: 0.2.6
    cpe:2.3:a:vllm:vllm:0.2.6
  • Vllm » Vllm » Version: 0.2.7
    cpe:2.3:a:vllm:vllm:0.2.7
  • Vllm » Vllm » Version: 0.20.0
    cpe:2.3:a:vllm:vllm:0.20.0
  • Vllm » Vllm » Version: 0.20.1
    cpe:2.3:a:vllm:vllm:0.20.1
  • Vllm » Vllm » Version: 0.20.2
    cpe:2.3:a:vllm:vllm:0.20.2
  • Vllm » Vllm » Version: 0.21.0
    cpe:2.3:a:vllm:vllm:0.21.0
  • Vllm » Vllm » Version: 0.21.1
    cpe:2.3:a:vllm:vllm:0.21.1
  • Vllm » Vllm » Version: 0.3.0
    cpe:2.3:a:vllm:vllm:0.3.0
  • Vllm » Vllm » Version: 0.3.1
    cpe:2.3:a:vllm:vllm:0.3.1
  • Vllm » Vllm » Version: 0.3.2
    cpe:2.3:a:vllm:vllm:0.3.2
  • Vllm » Vllm » Version: 0.3.3
    cpe:2.3:a:vllm:vllm:0.3.3
  • Vllm » Vllm » Version: 0.4.0
    cpe:2.3:a:vllm:vllm:0.4.0
  • Vllm » Vllm » Version: 0.4.1
    cpe:2.3:a:vllm:vllm:0.4.1
  • Vllm » Vllm » Version: 0.4.2
    cpe:2.3:a:vllm:vllm:0.4.2
  • Vllm » Vllm » Version: 0.4.3
    cpe:2.3:a:vllm:vllm:0.4.3
  • Vllm » Vllm » Version: 0.5.0
    cpe:2.3:a:vllm:vllm:0.5.0
  • Vllm » Vllm » Version: 0.5.1
    cpe:2.3:a:vllm:vllm:0.5.1
  • Vllm » Vllm » Version: 0.5.2
    cpe:2.3:a:vllm:vllm:0.5.2
  • Vllm » Vllm » Version: 0.5.3
    cpe:2.3:a:vllm:vllm:0.5.3
  • Vllm » Vllm » Version: 0.5.4
    cpe:2.3:a:vllm:vllm:0.5.4
  • Vllm » Vllm » Version: 0.5.5
    cpe:2.3:a:vllm:vllm:0.5.5
  • Vllm » Vllm » Version: 0.6.0
    cpe:2.3:a:vllm:vllm:0.6.0
  • Vllm » Vllm » Version: 0.6.1
    cpe:2.3:a:vllm:vllm:0.6.1
  • Vllm » Vllm » Version: 0.6.2
    cpe:2.3:a:vllm:vllm:0.6.2
  • Vllm » Vllm » Version: 0.6.3
    cpe:2.3:a:vllm:vllm:0.6.3
  • Vllm » Vllm » Version: 0.6.4
    cpe:2.3:a:vllm:vllm:0.6.4
  • Vllm » Vllm » Version: 0.6.5
    cpe:2.3:a:vllm:vllm:0.6.5
  • Vllm » Vllm » Version: 0.6.6
    cpe:2.3:a:vllm:vllm:0.6.6
  • Vllm » Vllm » Version: 0.7.0
    cpe:2.3:a:vllm:vllm:0.7.0
  • Vllm » Vllm » Version: 0.7.1
    cpe:2.3:a:vllm:vllm:0.7.1
  • Vllm » Vllm » Version: 0.7.2
    cpe:2.3:a:vllm:vllm:0.7.2
  • Vllm » Vllm » Version: 0.7.3
    cpe:2.3:a:vllm:vllm:0.7.3
  • Vllm » Vllm » Version: 0.8.0
    cpe:2.3:a:vllm:vllm:0.8.0
  • Vllm » Vllm » Version: 0.8.1
    cpe:2.3:a:vllm:vllm:0.8.1
  • Vllm » Vllm » Version: 0.8.2
    cpe:2.3:a:vllm:vllm:0.8.2
  • Vllm » Vllm » Version: 0.8.3
    cpe:2.3:a:vllm:vllm:0.8.3
  • Vllm » Vllm » Version: 0.8.4
    cpe:2.3:a:vllm:vllm:0.8.4
  • Vllm » Vllm » Version: 0.8.5
    cpe:2.3:a:vllm:vllm:0.8.5
  • Vllm » Vllm » Version: 0.9.0
    cpe:2.3:a:vllm:vllm:0.9.0
  • Vllm » Vllm » Version: 0.9.0.1
    cpe:2.3:a:vllm:vllm:0.9.0.1
  • Vllm » Vllm » Version: 0.9.1
    cpe:2.3:a:vllm:vllm:0.9.1
  • Vllm » Vllm » Version: 0.9.2
    cpe:2.3:a:vllm:vllm:0.9.2


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