CVE-2026-20904: Gitea: Broken access control in OpenID visibility toggle enables cross-user visibility changes

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: none known
Published: 2026-01-22 · updated 2026-06-17
Weakness: CWE-284

Description

Gitea does not properly validate ownership when toggling OpenID URI visibility. An authenticated user may be able to change the visibility settings of other users' OpenID identities.

Affected products

Gitea Open Source Git Server: before 1.25.4 — fixed in 1.25.4

How to fix

Upgrade to a fixed version: Gitea Open Source Git Server 1.25.4. Check the vendor advisory for mitigations.

References

https://blog.gitea.com/release-of-1.25.4/
https://github.com/go-gitea/gitea/pull/36346
https://github.com/go-gitea/gitea/pull/36361
https://github.com/go-gitea/gitea/releases/tag/v1.25.4
https://github.com/go-gitea/gitea/security/advisories/GHSA-jrpc-w85r-hgqx

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