CVE-2026-26022

Gogs: Stored XSS via data URI in issue comments

Gogs is an open source self-hosted Git service. Prior to version 0.14.2, a stored cross-site scripting (XSS) vulnerability exists in the comment and issue description functionality. The application's HTML sanitizer explicitly allows data: URI schemes, enabling authenticated users to inject arbitrary JavaScript execution via malicious links. This issue has been patched in version 0.14.2.

Affected

gogs

CVSS v3.1 NVD

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 GITHUB

8.7 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

EPSS

0.44% chance of exploitation in the next 30 days, 37th percentile

Published

2026-03-05

Updated

2026-03-10

Proof-of-concept exploits (1)

• advisories/GHSA-xrcr-gmf5-2r8j

Security advisories

• gogs/gogs/security/advisories/GHSA-xrcr-gmf5-2r8j
• gogs/gogs/pull/8174

References

• CVE Record
• NVD entry