GhostAction attack plants malicious workflows in GitHub repositories
StepSecurity and Socket disclosed that the GhostAction supply chain attack campaign pushed malicious GitHub Actions workflows to more than 340 repositories through two well-known open source maintainer accounts. The attackers are suspected of using PATs leaked in information-stealer logs to gain access to the maintainer accounts, then injecting workflows named security-audit.yml or github_actions_security.yml that exfiltrated data via curl over plaintext HTTP.