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

March 5, 2026

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.

References

github.com/advisories/GHSA-xrcr-gmf5-2r8j
github.com/gogs/gogs
github.com/gogs/gogs/commit/441c64d7bd8893b2f4e48660a8be3a7472e14291
github.com/gogs/gogs/pull/8174
github.com/gogs/gogs/releases/tag/v0.14.2
github.com/gogs/gogs/security/advisories/GHSA-xrcr-gmf5-2r8j
nvd.nist.gov/vuln/detail/CVE-2026-26022

Code Behaviors & Features

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