Vulnerability · Published Mar 5, 2026 · Assigned by GitHub_M

CVE-2026-26022Gogs: Stored XSS via data URI in issue comments

High 8.7

In plain English

A high-severity cross-site scripting in gogs from gogs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.7High

Exploit odds (30 days)0.4%top 70.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	gogs.io/gogs	0.14.2	GHSA-xrcr-gmf5-2r8j
Go	gogs.io/gogs	no fix listed	GO-2026-4620

Affected products (as reported)

Vendor	Product	Versions
gogs	gogs	< 0.14.2

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

References

https://github.com/gogs/gogs/security/advisories/GHSA-xrcr-gmf5-2r8j x_refsource_CONFIRM
https://github.com/gogs/gogs/pull/8174 x_refsource_MISC
https://github.com/gogs/gogs/commit/441c64d7bd8893b2f4e48660a8be3a7472e14291 x_refsource_MISC
https://github.com/gogs/gogs/releases/tag/v0.14.2 x_refsource_MISC