Input validation error in gogs - CVE-2026-52796
Published: June 19, 2026
Vulnerability identifier: #VU134915
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-52796
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: gogs.io
Affected software:
gogs
gogs
Detailed vulnerability description
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper input validation in the issue index pattern rendering logic in internal/markup/markup.go when rendering issue index patterns. A remote user can configure a specially crafted issue index pattern and trigger its rendering to cause a denial of service.
User interaction is required to access a page that renders the affected issue index.
How to mitigate CVE-2026-52796
Install security update from vendor's website.