GHSA-79j6-g2m3-jgfw: vLLM has remote code execution vulnerability in the tool call parser for Qwen3-Coder

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1. GitHub Advisory Database
2. GitHub Reviewed
3. CVE-2025-9141

vLLM has remote code execution vulnerability in the tool call parser for Qwen3-Coder

High severity GitHub Reviewed Published Aug 20, 2025 in vllm-project/vllm • Updated Aug 21, 2025

Affected versions

>= 0.10.0, < 0.10.1.1

Patched versions

0.10.1.1

Description

Summary

An unsafe deserialization vulnerability allows any authenticated user to execute arbitrary code on the server if they are able to get the model to pass the code as an argument to a tool call.

Details

vLLM’s Qwen3 Coder tool parser contains a code execution path that uses Python’s eval() function to parse tool call parameters. This occurs during the parameter conversion process when the parser attempts to handle unknown data types.

This code path is reached when:

1. Tool calling is enabled (–enable-auto-tool-choice)
2. The qwen3_coder parser is specified (–tool-call-parser qwen3_coder)
3. The parameter type is not explicitly defined or recognized

Impact

Remote Code Execution via Python’s eval() function.

References

• GHSA-79j6-g2m3-jgfw
• vllm-project/vllm#21396
• vllm-project/vllm@4594fc3

Published to the GitHub Advisory Database

Aug 21, 2025

Last updated

Aug 21, 2025

EPSS score