Malicious Code Detected in wei516-tpa: A Threat to LLM Safeguards
Summary
MAL-2025-191931: Malicious code in wei516-tpa (PyPI). Affects wei516-tpa versions 0.1.4 – 0.1.6. No fix is published. How to fix ↓
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Background
The package 'wei516-tpa' is designed to provide an MCP server functionality. However, it has been identified to contain malicious code that attempts to manipulate an LLM agent to bypass its safeguards. This raises concerns about the integrity and security of applications utilizing this package, as it may lead to unintended consequences in AI behavior.
Vulnerability Detail
The vulnerability originates from the package 'wei516-tpa', which masquerades as a legitimate MCP server but includes code aimed at compromising LLM safeguards. This malicious intent could allow attackers to exploit the package for unauthorized actions, potentially leading to data breaches or misuse of AI capabilities. The package was sourced from kam193 and has been flagged for its low-harm potential, categorized under pentesting and research.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
pip uninstall wei516-tpaIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary measure, you can avoid using the 'wei516-tpa' package until a fix is confirmed. If you need to maintain functionality, consider using alternative packages that provide similar MCP server capabilities without the associated risks.
Conclusion
The 'wei516-tpa' package has been identified as containing malicious code that threatens LLM safeguards. Users are encouraged to update or remove the package to mitigate risks. Utilizing tools like Vulert can help monitor for such vulnerabilities in real-time.
See every vulnerability recorded for wei516-tpa →
FAQ
The vulnerability involves malicious code that attempts to manipulate LLM safeguards, posing a risk to applications using this package.
You can use the Vulert playground at Vulert Scanner to monitor and alert for open-source vulnerabilities in your software without needing to sign up.
It is advisable to update the package to the latest version or consider removing it until a fix is confirmed.
Detailed information can be found on the GitHub repository of the malicious packages or through the vulnerability report provided by OSSF.
Yes, the malicious code could potentially lead to unauthorized actions and data breaches if exploited.
