Multiple 2024-2026 open source supply chain attacks trace back to GitHub Actions' structural design flaws: mutable dependencies, missing lockfiles, and enterprise defaults on untrusted forks. Compromises include Ultralytics distributing crypto miners, nx harvesting credentials, tj-actions leaking secrets from 23,000 repos, and Trivy being compromised twice. The platform has become the critical bottleneck securing the global open source ecosystem.
Safety
GitHub Actions is the weakest link
GitHub Actions' mutable-dependency model and permissive fork defaults enabled a 2024-2026 supply chain attack wave compromising Ultralytics, nx, Trivy, and 23,000+ dependent repositories.
Tuesday, April 28, 2026 12:00 PM UTC2 MIN READSOURCE: LobstersBY sys://pipeline
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safety
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