CVE-2025-30066
CVE-2025-30066 is a high-severity vulnerability in Tj-actions Changed-files with a CVSS 3.x base score of 8.6. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2025-03-18). The underlying weakness is classified as CWE-506.
Key facts
- Severity: High (CVSS 3.x base score 8.6)
- EPSS exploit prediction: 41% (98th percentile)
- Actively exploited: Yes — listed in CISA KEV (added 2025-03-18)
- EU (EUVD) id: EUVD-2025-6565
- EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2025-03-18)
- Weakness: CWE-506
- Affected product: Tj-actions Changed-files
- Published:
- Last modified:
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.)
Frequently asked questions
- What is CVE-2025-30066?
- 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.)
- How severe is CVE-2025-30066?
- CVE-2025-30066 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2025-30066 being actively exploited?
- Yes. CVE-2025-30066 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-03-18, which means active exploitation has been confirmed. It should be prioritised for remediation.
- What products are affected by CVE-2025-30066?
- CVE-2025-30066 affects Tj-actions Changed-files. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-30066?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
- Does CVE-2025-30066 have an EU (EUVD) identifier?
- Yes. CVE-2025-30066 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-6565. It is also flagged as exploited in the EUVD (since 2025-03-18).
- When was CVE-2025-30066 published?
- CVE-2025-30066 was published on 2025-03-15 and last updated on 2026-06-17.
References
- https://blog.gitguardian.com/compromised-tj-actions/
- https://github.com/chains-project/maven-lockfile/pull/1111
- https://github.com/espressif/arduino-esp32/issues/11127
- https://github.com/github/docs/blob/962a1c8dccb8c0f66548b324e5b921b5e4fbc3d6/content/actions/security-for-github-actions/security-guides/security-hardening-for-github-actions.md?plain=1#L191-L193
- https://github.com/modal-labs/modal-examples/issues/1100
- https://github.com/rackerlabs/genestack/pull/903
- https://github.com/tj-actions/changed-files/blob/45fb12d7a8bedb4da42342e52fe054c6c2c3fd73/README.md?plain=1#L20-L28
- https://github.com/tj-actions/changed-files/issues/2463
- https://github.com/tj-actions/changed-files/issues/2464
- https://github.com/tj-actions/changed-files/issues/2477
- https://news.ycombinator.com/item?id=43367987
- https://news.ycombinator.com/item?id=43368870
- https://semgrep.dev/blog/2025/popular-github-action-tj-actionschanged-files-is-compromised/
- https://sysdig.com/blog/detecting-and-mitigating-the-tj-actions-changed-files-supply-chain-attack-cve-2025-30066/
- https://web.archive.org/web/20250315060250/https://github.com/tj-actions/changed-files/issues/2463
- https://www.stepsecurity.io/blog/harden-runner-detection-tj-actions-changed-files-action-is-compromised
- https://www.stream.security/post/github-action-supply-chain-attack-exposes-secrets-what-you-need-to-know-and-how-to-respond
- https://www.sweet.security/blog/cve-2025-30066-tj-actions-supply-chain-attack
- https://www.wiz.io/blog/github-action-tj-actions-changed-files-supply-chain-attack-cve-2025-30066
- https://www.cisa.gov/news-events/alerts/2025/03/18/supply-chain-compromise-third-party-github-action-cve-2025-30066
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-30066
Affected products (1)
- cpe:2.3:a:tj-actions:changed-files:*:*:*:*:*:*:*:*
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