Gitea WebAuthn bypass during OAuth and OIDC sign-in
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.
CVE-2026-73278
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-73278
Gitea
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Gitea",
"product": "Gitea",
"versions": [
{
"status": "affected",
"version": "1.16.0",
"versionType": "semver",
"lessThanOrEqual": "1.27.1"
}
],
"packageName": "gitea.dev",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-73278
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #12252 · Revision 1
- Added to Heist Feed
- Publisher date