CVE-2026-101023

critical

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.

References

https://github.com/go-gitea/gitea/security/advisories/GHSA-469m-x4mw-38r3

https://github.com/go-gitea/gitea/releases/tag/v28.1.0

https://github.com/go-gitea/gitea/pull/39507

https://github.com/go-gitea/gitea/pull/39501

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-94061

https://blog.gitea.com/release-of-28.1.0/

Details

Source: Mitre, NVD

Published: 2026-10-06

Updated: 2026-10-07

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: Critical

EPSS

EPSS: 0.00353