{"id":"CVE-2026-73278","title":"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","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 …","severity":"none","cwe":["CWE-287"],"vendor":"Gitea","product":"gitea.dev","affected":["gitea.dev >= 1.16.0 <= 1.27.1"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T20:17:29.000","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73278","references":[{"url":"https://blog.gitea.com/release-of-1.27.2/","label":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/pull/38805","label":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/pull/38810","label":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/releases/tag/v1.27.2","label":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-92j2-6qcg-c28c","label":"88ee5874-cf24-4952-aea0-31affedb7ff2"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T20:16:42.489Z","slug":"CVE-2026-73278","body":"## Overview\n\nGitea'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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}