Clinejection: How a GitHub Issue Title Compromised an AI Coding Assistant Used by 5M Developers
📰 Dev.to AI
A misconfigured GitHub issue title compromised an AI coding assistant used by 5M developers, leading to a supply chain attack
Action Steps
- Configure GitHub workflow permissions carefully to avoid misconfigured triggers
- Limit AI agent permissions to prevent unauthorized shell command execution
- Monitor GitHub issue titles for potential security vulnerabilities
- Implement supply chain attack detection and prevention measures
- Review and update AI coding assistant security protocols
Who Needs to Know This
Developers and security teams can learn from this incident to improve their GitHub workflow configurations and AI agent permissions, ensuring the security of their users' machines
Key Insight
💡 Misconfigured GitHub workflow permissions and AI agent permissions can lead to supply chain attacks
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💡 Misconfigured GitHub issue title compromises AI coding assistant used by 5M devs! 🚨
Key Takeaways
A misconfigured GitHub issue title compromised an AI coding assistant used by 5M developers, leading to a supply chain attack
Full Article
TL;DR In December 2025, Cline — an AI coding assistant with over 5 million users — gave an AI agent (Claude) write access to triage GitHub issues, including permission to run shell commands. A misconfigured trigger condition let any GitHub user invoke the workflow. What followed was a four-hop supply chain compromise that ended with a malicious npm package silently installing a second AI agent on user machines. I broke down the full chain in video form: <a href="http
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