CVE-2026-73278

critical · 9.8

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.

9.8

CVSS

0.5%

EPSS (exploit prob.)

40th

EPSS percentile

2026-10-06

Published

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

Weaknesses

CWE-287

Affected products

Vendor	Product	Affected versions
gitea	gitea	>= 1.16.0, < 1.27.2

Check a specific version with /api/v1/cve/match.

References

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
https://github.com/go-gitea/gitea/security/advisories/GHSA-92j2-6qcg-c28c

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-73278