CVE-2026-101023 Gitea OAuth2 refresh token grant accepts access tokens

What is CVE-2026-101023?

CVE-2026-101023 is a critical authentication bypass vulnerability in Gitea Gitea, published on 6 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

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.

Weakness: CWE-287

Which versions are affected by CVE-2026-101023?

1 open source package ship an affected version, including gitea. It affects 1 product.

Products include Gitea Gitea.

How do I fix CVE-2026-101023?

Upgrade gitea to 28.1.0 or later.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-101023 being exploited?

There is no known exploitation of CVE-2026-101023 in the wild and no public exploit code.

Other vulnerabilities in Gitea Gitea

• CVE-2026-60004 Gitea Code Injection Exploited Critical 9.8
• CVE-2026-73278 Gitea WebAuthn bypass during OAuth and OIDC sign-in Critical 9.8
• CVE-2026-94205 Gitea fork workflow approval bypass through maintainer-triggered events Critical 9.8
• CVE-2022-42968 Gitea vulnerable to Argument Injection Critical 9.8
• CVE-2021-45330 Improper Privilege Management in Gitea Critical 9.8

All Gitea Gitea vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-gitea-2026-101023, GHSA-469m-x4mw-38r3, MINI-c35j-6234-vfgw, MINI-qf7m-7xjq-6r69.