Supply Chain Attack on GitHub Action 'tj-actions/changed-files' Leaks CI/CD Secrets
A supply chain attack compromised the popular 'tj-actions/changed-files' GitHub Action, impacting over 23,000 repositories. Attackers injected malicious code that exfiltrated CI/CD secrets, GitHub tokens, API keys, and other credentials by printing them directly into workflow logs. The attack began on March 10, 2025, and was detected on March 14, 2025, with public reporting starting around March 10-14, 2025.
Signal context
First seen: Mar 10, 2025
Last updated: Jun 26, 2026
Status: Public signal
Key points
- Malicious code injected into 'tj-actions/changed-files' GitHub Action.
- Attack occurred between March 10 and March 14, 2025.
- Affected over 23,000 repositories, with 218 confirmed to have leaked secrets.
Signal analysis
BetaIt helps compare this signal with other published signals without treating the labels as final determinations.
Likely country: Location not provided
Watch internet-facing systems, credential abuse and exploit activity.
- Source type: outside the affected organization
Impact area: Confidentiality
- 1 signal in the same sector
- 90 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
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