Critical Supply Chain Attack via GitHub Actions: Urgent Update Required

TL;DR

A critical supply chain attack via GitHub Actions has been identified, urging organizations to update secrets immediately due to the CVE-2025-30066 vulnerability.

Critical Supply Chain Attack Targets GitHub Actions

Organizations using GitHub Actions are urged to immediately update their secrets following a recently identified supply chain attack. This attack exploits the CVE-2025-30066 vulnerability in the changed-files GitHub Action, potentially exposing sensitive information.

Understanding the Threat

The CVE-2025-30066 vulnerability allows attackers to gain unauthorized access to secrets stored in GitHub repositories. This poses a significant risk to organizations relying on GitHub Actions for their CI/CD pipelines. The compromised changed-files GitHub Action can lead to:

• Unauthorized Access: Attackers can access and manipulate sensitive data.
• Data Breaches: Sensitive information such as API keys, tokens, and passwords may be exposed.
• Operational Disruptions: Compromised pipelines can disrupt development and deployment processes.

Immediate Action Required

To mitigate the risk associated with this vulnerability, organizations must take the following steps:

1. Update Secrets: Immediately rotate and update all secrets that may have been exposed.
2. Review Access Controls: Ensure that access to repositories and actions is strictly controlled.
3. Monitor Activity: Closely monitor for any unusual activity in your GitHub repositories.

Steps to Secure Your GitHub Actions

1. Rotate Secrets:
   • Generate new secrets for all affected repositories.
   • Update your GitHub Actions workflows with the new secrets.
2. Implement Access Controls:
   • Review and update access permissions for your repositories.
   • Limit access to sensitive actions and workflows.
3. Enable Monitoring:
   • Use GitHub’s security features to monitor for suspicious activity.
   • Set up alerts for any unauthorized access attempts.

Conclusion

The CVE-2025-30066 vulnerability highlights the importance of vigilant security practices in managing GitHub Actions. Organizations must act swiftly to update their secrets and implement robust security measures to protect against supply chain attacks. Staying informed and proactive is crucial in safeguarding sensitive information and maintaining the integrity of CI/CD pipelines.

Additional Resources

For further insights, check:

• Full Article on Kaspersky Blog

This article provides a comprehensive overview of the attack and additional security recommendations.