CVE-2026-73278

Summary

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.

Affected Software

Weaknesses

• CWE-287: CWE-287: Improper Authentication

References

• https://github.com/go-gitea/gitea/security/advisories/GHSA-92j2-6qcg-c28c
• https://blog.gitea.com/release-of-1.27.2/
• https://github.com/go-gitea/gitea/pull/38805
• https://github.com/go-gitea/gitea/pull/38810
• https://github.com/go-gitea/gitea/releases/tag/v1.27.2

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