Out-of-bounds read in Gitea - CVE-2026-96399
Published: October 19, 2026
Vulnerability identifier: #VU156098
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-96399
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service by crashing the Gitea instance.
The vulnerability exists due to an out-of-bounds read that triggers an uncaught runtime panic in the findActionKeywords function when rendering external issue tracker references. A remote user can modify a repository's external issue tracker settings and craft README content that triggers the panic when viewed to crash the Gitea instance.
Affected software
Gitea
How to mitigate CVE-2026-96399
Install security update from vendor's website.
Gitea - update to 28.0.0