The GhostAction Campaign: 3,325 Secrets Stolen Through Compromised GitHub Workflows

Security researchers uncovered GhostAction, a large-scale supply chain attack that compromised 817 GitHub repositories across 327 users. The attackers injected malicious GitHub Actions workflows disguised as security updates, which automatically exfiltrated secrets including PyPI, npm, DockerHub tokens, AWS keys, and database credentials. In total, 3,325 secrets were stolen. The campaign began with a malicious commit on September 2, 2025, and was detected three days later, prompting GitHub and PyPI to intervene by reverting changes and restricting affected packages. Despite the quick response, many stolen secrets still posed risks, with SDKs in multiple ecosystems such as Python, Rust, JavaScript, and Go being impacted. The incident highlights the urgent need to secure CI/CD pipelines and treat automated workflows as critical parts of the enterprise threat surface. 

https://securityboulevard.com/2025/09/the-ghostaction-campaign-3325-secrets-stolen-through-compromised-github-workflows/

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