Vulnerability in Gitea

[ Why it matters ]Priority signals

• Critical severity: CVSS 9.1

[ Description ]Official description

Gitea's OAuth2 token endpoint verified the signature and grant of a token submitted with the `refresh_token` grant type, but not that the token was a refresh token. An unexpired access token for the same OAuth2 application and grant could be exchanged for a new access token and refresh token. Whoever holds such an access token could keep access beyond the token's original lifetime.

[ Fixes ]Fixes and patches

• Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
• Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ Advisories ]Government CERT advisories

• BSI CERT-Bund6 Oct 2026WID-SEC-2026-3792

  Gitea: Multiple vulnerabilities Translated from German

  CVE-2026-103670CVE-2026-94205CVE-2026-103059+26 more CVEs

[ References ]References

• blog.gitea.com/release-of-28.1.0Release Notes
• github.com/go-gitea/gitea/pull/39501Patch
• github.com/go-gitea/gitea/pull/39507Patch
• github.com/go-gitea/gitea/releases/tag/v28.1.0Release Notes
• github.com/go-gitea/gitea/security/advisories/GHSA-469m-x4mw-38r3Vendor Advisory