Auth bypass in Gitea

CVE-2026-73278

Gitea's OAuth2 and OpenID Connect sign-in paths do not require a WebAuthn challenge when WebAuthn is the account's only configured second factor. A party able to authenticate through the affected external identity flow can obtain a full session without the passkey verification enforced during password login. One affected path can also persist an external identity link, extending the compromise beyond the initial session; accounts with TOTP configured are outside the reported WebAuthn-only scenario.

Vulnerability class: Broken Authentication

Published .

EPSS exploit prediction

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Affected products

Weakness classification (CWE)

References