GitHub Actions pull_request_target policy changes take effect November 2, 2026
GitHub has introduced a new default Actions event policy for eligible public repositories, which begins enforcement on November 2, 2026 for affected repos that used the default before general availability. The policy is initially running in evaluate mode, meaning workflows still execute while potential blocks are identified. The change does not stop all public repositories from building, nor does it mean every use of pull_request_target is unsafe. Maintainers are advised to review which workflows depend on the event, which policy applies, and whether those jobs need privileged access. Developers are generally encouraged to use the lower-privilege pull_request event for building and testing proposed changes.
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