How a Single eval() Call Created a CVSS 9.1 Vulnerability in GitHub Actions

📰 Medium · DevOps

Learn how a single eval() call created a CVSS 9.1 vulnerability in GitHub Actions, compromising millions of CI/CD pipelines

advanced Published 9 Jun 2026
Action Steps
  1. Identify potential eval() calls in GitHub Actions workflows
  2. Assess the risk of branch name injection attacks
  3. Implement input validation and sanitization for branch names
  4. Configure GitHub Actions to use secure defaults
  5. Test and verify pipeline security using vulnerability scanning tools
Who Needs to Know This

DevOps and security teams can benefit from understanding this vulnerability to improve pipeline security and prevent similar issues

Key Insight

💡 Unvalidated user input in eval() calls can lead to severe security vulnerabilities

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💡 Single eval() call creates CVSS 9.1 vulnerability in GitHub Actions! 🚨

Key Takeaways

Learn how a single eval() call created a CVSS 9.1 vulnerability in GitHub Actions, compromising millions of CI/CD pipelines

Full Article

A branch name almost hijacked millions of CI/CD pipelines. Here's exactly how it worked. Continue reading on Medium »
Read full article → ← Back to Reads

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