---
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: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-287
vendor: gitea
product: gitea
affected:
  - 'gitea >= 1.16.0, < 1.27.2'
patched:
  - gitea 1.27.2
published: '2026-10-06'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T16:53:31.257'
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
epss: 0.00466
epssPercentile: 0.40139
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-10-07T20:00:20.177733Z'
ingestedAt: '2026-10-06T20:16:42.489Z'
---

## Overview

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

- `gitea >= 1.16.0, < 1.27.2`

## Remediation

Upgrade past the affected range:

- `gitea 1.27.2`