CVE-2026-96399

HIGHCVSS 7.5

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.

Timeline

Published:October 6th, 2026 8:17 PM

Last modified:October 7th, 2026 9:17 PM

CVSS Scoring

CVSS v3: 7.5 (HIGH)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-125 CWE-248

References & Reports

Advisories, patches, and third-party reports

https://blog.gitea.com/release-of-28.0.0/
https://github.com/go-gitea/gitea/pull/39354
https://github.com/go-gitea/gitea/releases/tag/v28.0.0
https://github.com/go-gitea/gitea/security/advisories/GHSA-mw6q-qj47-9g5q

Source: NIST NVD · Data may lag official sources by up to one minute