CVE-2026-96399
Gitea denial of service through external issue tracker patterns
- State
- Published
- Severity
- 7.5 High
- Published
- Oct 6, 2026
- Updated
- Oct 7, 2026
- Reserved
- Oct 4, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
GiteaGitea |
|
References
- GitHub Security Advisory GHSA-mw6q-qj47-9g5qvendor-advisory
- Fix: go-gitea/gitea pull request #39354patch
- Gitea 28.0.0 release announcementrelease-notes
- go-gitea/gitea v28.0.0 releaserelease-notes
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