Critical Security Incident involving GitHub Action tj-action/changed-files


A critical security incident involving the tj-actions/changed-files GitHub Action has been reported.

The changed-files action, which allows GitHub repositories to track file changes, has been tampered with to allow the exposure through GitHub Actions build logs of CI/CD secrets, including passwords, tokens, API keys, PII and other sensitive data that have been embedded within software code. Workflow logs that are made publicly accessible, such as those for public repositories, could allow attackers to obtain exposed secrets for further malicious actions. The issue is tracked as a high-severity vulnerability under CVE-2025-30066.

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Source: NHS Digital


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