Bleeping Computer
9.0 — CRITICAL
The GitHub Actions Attack Pattern Your CI Security Scanners Miss
ActiveState explains how GitHub Actions attack chains can evade traditional CI security scanners, why passing a scan doesn't guarantee a secure pipeline, and how organizations can better govern their CI/CD workflows. [...]
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
A previously unknown vulnerability, Cordyceps, was discovered in GitHub Actions workflows, allowing attackers to exploit untrusted code contributions and gain permanent access to sensitive repositories. The vulnerability exists due to the composition of the workflow, not a single line of code.
⚙️Technical Details
Affected Systems
npmPyPIcrates.ioGo ecosystems
Attack Vectors
Command injectionCode injection through actions/github-scriptCross-workflow privilege escalation
💥Impact Assessment
Severity: critical
Who Is at Risk
Developers and organizations using GitHub Actions workflows with untrusted code contributions
🛡️Recommended Actions
1Prefer pull_request over pull_request_target for untrusted contributions
2Never check out pull request head code inside a privileged workflow
3Gate privileged workflows behind manual approval for first-time contributors
📦Affected Products
Microsoft Azure Sentinel repositoryGoogle AI Agent Development Kit sample repositoryApache Doris
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