CVE-2025-30154: New GitHub Action Vulnerability in CISA Catalog

A newly discovered vulnerability in GitHub Actions, tracked as CVE-2025-30154, has been added to the Cybersecurity and Infrastructure Security Agency's (CISA) Known Exploited Vulnerabilities Catalog. This critical security flaw affects automated workflows and could allow attackers to execute arbitrary code in CI/CD pipelines.

Understanding the Vulnerability

CVE-2025-30154 is a remote code execution (RCE) vulnerability affecting GitHub Actions' workflow execution environment. The flaw exists in how GitHub Actions processes certain workflow commands during job execution, potentially allowing malicious actors to:

  • Inject unauthorized commands into CI/CD pipelines
  • Gain access to repository secrets and sensitive data
  • Compromise build artifacts and deployment processes
  • Pivot to other systems in the development environment

Technical Analysis

The vulnerability stems from improper input validation in GitHub Actions' command interpreter. When processing workflow commands that include specially crafted environment variables, the system fails to properly sanitize input, creating an opportunity for command injection.

Affected Components:

  • GitHub-hosted runners
  • Self-hosted runners with certain configurations
  • Workflows using specific action patterns

Impact Assessment

Organizations using GitHub Actions for:
- Automated testing
- Continuous integration/deployment
- Infrastructure as Code deployments
- Package publishing workflows

are particularly at risk. The vulnerability has received a CVSS score of 9.1 (Critical) due to:

  • Low attack complexity
  • No privileges required
  • High impact on confidentiality, integrity, and availability

Mitigation Strategies

GitHub has released patches addressing CVE-2025-30154. Recommended actions include:

  1. Immediate Updates:
    - Update all GitHub Actions runners to the latest version
    - Review and update third-party actions in workflows

  2. Workflow Hardening:
    - Implement strict environment variable sanitization
    - Use GitHub's new workflow command validation features
    - Limit secrets exposure in workflows

  3. Monitoring:
    - Audit workflow run logs for suspicious activity
    - Implement anomaly detection for workflow execution patterns

CISA's Involvement

The inclusion in CISA's catalog means:

  • Federal agencies must patch by the specified deadline
  • Private sector organizations are strongly advised to prioritize remediation
  • The vulnerability is confirmed to be actively exploited in the wild

Long-term Security Considerations

This incident highlights several important security lessons for DevOps teams:

  • The importance of regular CI/CD pipeline audits
  • Need for better secrets management in automated workflows
  • Value of implementing least-privilege principles in build environments

Security researchers recommend:

  • Implementing software bill of materials (SBOM) for workflows
  • Using ephemeral runners for sensitive operations
  • Regularly rotating repository secrets and access tokens

Timeline and Response

  • Discovery Date: January 15, 2025
  • GitHub Advisory Published: January 22, 2025
  • CISA Catalog Addition: January 25, 2025
  • Patch Availability: Version 2.3.5 of GitHub Actions

Additional Resources

For organizations seeking more information: