| Package | Affected versions | Patched versions |
|---|---|---|
| gitea | < 28.0.0 | 28.0.0 |
A repository's external issue tracker regular expression containing alternating capture groups could produce invalid slice indexes when Gitea rendered issue references, causing a runtime panic that terminated the Gitea process. A user who can edit a repository's external issue tracker settings could make any later rendering of matching content, such as viewing a README, crash the instance for all users.
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