CVE-2026-25229: Gogs Authorization Bypass Allows Cross-Repository Label Modification

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-02-19 · updated 2026-06-17
Weakness: CWE-284

Description

Gogs is an open source self-hosted Git service. Versions 0.13.4 and below have a broken access control vulnerability which allows authenticated users with write access to any repository to modify labels belonging to other repositories. The UpdateLabel function in the Web UI (internal/route/repo/issue.go) fails to verify that the label being modified belongs to the repository specified in the URL path, enabling cross-repository label tampering attacks. The vulnerability exists in the Web UI's label update endpoint POST /:username/:reponame/labels/edit. The handler function UpdateLabel uses an incorrect database query function that bypasses repository ownership validation. This issue has been fixed in version 0.14.1.

Affected products

gogs: before 0.14.1 — fixed in 0.14.1

How to fix

Upgrade to a fixed version: gogs 0.14.1. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2026-25229 or the next vulnerability affects your stack