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.
History

Tue, 13 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*

Wed, 07 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 07 Oct 2026 01:00:00 +0000

Type Values Removed Values Added
First Time appeared Gitea
Gitea gitea
Vendors & Products Gitea
Gitea gitea

Tue, 06 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
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.
Title Gitea denial of service through external issue tracker patterns
Weaknesses CWE-125
CWE-248
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Gitea

Published: 2026-10-06T19:25:18.075Z

Updated: 2026-10-07T20:10:45.979Z

Reserved: 2026-10-04T21:59:53.543Z

Link: CVE-2026-96399

cve-icon Vulnrichment

Updated: 2026-10-07T20:10:41.330Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-06T20:17:35.270

Modified: 2026-10-13T15:36:39.100

Link: CVE-2026-96399

cve-icon Redhat

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