Vulnerability record

CVE-2025-30066

tj-actions/changed-files GitHub Action Embedded Malicious Code Vulnerability

Severity: HighExploitation: Exploitation confirmedCISA KEV
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run changed-files GitHub Action, fix it now.

CISA required action: Apply mitigations as set forth in the CISA instructions linked below. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

US federal civilian agencies must remediate by Apr 8, 2025.

Patch status

No official fix confirmed yet

Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.

Description

tj-actions changed-files before 46 allows remote attackers to discover secrets by reading actions logs. (The tags v1 through v45.0.7 were affected on 2025-03-14 and 2025-03-15 because they were modified by a threat actor to point at commit 0e58ed8, which contained malicious updateFeatures code.)

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

Products affected by this vulnerability, with versions and the source of each entry
ProductVendorSource
changed-files GitHub Actiontj-actionsKEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog. Version details have not been published yet.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2025-30066 scored CVSS 8.6: tj-actions changed-files GitHub Action, tj-actions/changed-files GitHub Action Embedded Malicious Code Vulnerability

    CISA lists this as exploited in the wild. Unpatched changed-files GitHub Action systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

  • cisa.gov https://www.cisa.gov/news-events/alerts/2025/03/18/supply-chain-compromise-third-party-tj-actionschanged-files…
  • github.com https://github.com/tj-actions/changed-files/blob/45fb12d7a8bedb4da42342e52fe054c6c2c3fd73/README.md?plain=1#L2…
  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2025-30066
  • blog.gitguardian.com https://blog.gitguardian.com/compromised-tj-actions/
  • github.com https://github.com/chains-project/maven-lockfile/pull/1111
  • github.com https://github.com/espressif/arduino-esp32/issues/11127
  • github.com https://github.com/github/docs/blob/962a1c8dccb8c0f66548b324e5b921b5e4fbc3d6/content/actions/security-for-gith…
  • github.com https://github.com/modal-labs/modal-examples/issues/1100
  • github.com https://github.com/rackerlabs/genestack/pull/903
  • github.com https://github.com/tj-actions/changed-files/issues/2463
  • github.com https://github.com/tj-actions/changed-files/issues/2464
  • github.com https://github.com/tj-actions/changed-files/issues/2477
  • news.ycombinator.com https://news.ycombinator.com/item?id=43367987
  • news.ycombinator.com https://news.ycombinator.com/item?id=43368870
  • semgrep.dev https://semgrep.dev/blog/2025/popular-github-action-tj-actionschanged-files-is-compromised/
  • sysdig.com https://sysdig.com/blog/detecting-and-mitigating-the-tj-actions-changed-files-supply-chain-attack-cve-2025-300…
  • web.archive.org https://web.archive.org/web/20250315060250/https://github.com/tj-actions/changed-files/issues/2463
  • stepsecurity.io https://www.stepsecurity.io/blog/harden-runner-detection-tj-actions-changed-files-action-is-compromised
  • stream.security https://www.stream.security/post/github-action-supply-chain-attack-exposes-secrets-what-you-need-to-know-and-h…
  • sweet.security https://www.sweet.security/blog/cve-2025-30066-tj-actions-supply-chain-attack
  • wiz.io https://www.wiz.io/blog/github-action-tj-actions-changed-files-supply-chain-attack-cve-2025-30066
  • cisa.gov https://www.cisa.gov/news-events/alerts/2025/03/18/supply-chain-compromise-third-party-github-action-cve-2025-…
  • cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-30066