CVE-2026-73278
CRITICAL
CVSS 9.8
Published: 2026-10-06
Modified: 2026-10-07
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Description
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.
Quick Facts
| CVE ID | CVE-2026-73278 |
| CVSS Score | 9.8 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | 2026-10-06 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |