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docs: warn that GitHub blocks pull_request_target from December 2 #317

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shenxianpeng merged 1 commit into from
Nov 2, 2026
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docs: warn that GitHub blocks pull_request_target from December 2 #317

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10 changes: 10 additions & 0 deletions docs/fork-pr-comments.md
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Expand Up @@ -60,6 +60,16 @@ that forbids it — `pull_request_target` runs in the context of the base reposi
`GITHUB_TOKEN` has the permissions your workflow asks for and `pr-comments: true` works
on fork pull requests.

> [!IMPORTANT]
> From December 2, 2026, GitHub blocks `pull_request_target` by default in public
> repositories on github.com that have no Actions event policy of their own
> ([changelog](https://github.blog/changelog/2026-09-17-workflow-execution-protections-in-github-actions-generally-available)).
> After that date the workflow below stops running unless a policy allows the event. To
> keep it, add one under **Settings → Actions → Policies** that permits
> `pull_request_target` for this workflow file only
> ([Control workflow execution](https://docs.github.com/actions/how-tos/administer/control-workflow-execution)).
> The App needs no such policy.

```yaml
on:
pull_request_target:
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