Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the OIDC callback handler issues a full JWT token without checking whether the matched user has TOTP two-factor authentication enabled. When a local user with TOTP enrolled is matched via the OIDC email fallback mechanism, the second factor is completely skipped. This vulnerability is fixed in 2.3.0.
History

Mon, 13 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 13 Apr 2026 13:00:00 +0000

Type Values Removed Values Added
First Time appeared Go-vikunja
Go-vikunja vikunja
Vendors & Products Go-vikunja
Go-vikunja vikunja

Fri, 10 Apr 2026 16:00:00 +0000

Type Values Removed Values Added
Description Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the OIDC callback handler issues a full JWT token without checking whether the matched user has TOTP two-factor authentication enabled. When a local user with TOTP enrolled is matched via the OIDC email fallback mechanism, the second factor is completely skipped. This vulnerability is fixed in 2.3.0.
Title Vikunja ahs a TOTP Two-Factor Authentication Bypass via OIDC Login Path
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-10T15:45:30.662Z

Updated: 2026-04-13T15:37:32.071Z

Reserved: 2026-03-30T18:41:20.753Z

Link: CVE-2026-34727

cve-icon Vulnrichment

Updated: 2026-04-13T15:26:37.332Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-04-10T16:16:31.853

Modified: 2026-04-13T16:16:27.807

Link: CVE-2026-34727

cve-icon Redhat

No data.