CVE-2026-34727
Published:April 10, 2026
Updated:April 20, 2026
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.
Affected Packages
https://github.com/go-vikunja/vikunja.git (GITHUB):
Affected version(s) >=v0.1 <v2.3.0Fix Suggestion:
Update to version v2.3.0github.com/go-vikunja/vikunja (GO):
Affected version(s) >=v0.1 <v2.3.0Fix Suggestion:
Update to version v2.3.0code.vikunja.io/api (GO):
Affected version(s) >=v0.13.1 <v2.3.0Fix Suggestion:
Update to version v2.3.0Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.4
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Improper Authentication
EPSS
Base Score:
0.04
