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CVE-2026-33473

MEDIUM CVSS 3.1: 5.7 EPSS 0.03%
Updated Mar 27, 2026
Vikunja
Parameter Value
CVSS 5.7 (MEDIUM)
Affected Versions 0.13 — 2.2.1
Fixed In 2.2.1
Type CWE-287 (Improper Authentication)
Vendor Vikunja
Public PoC No

Vikunja is an open-source self-hosted task management platform. Starting in version 0.13 and prior to version 2.2.1, any user that has enabled 2FA can have their TOTP reused during the standard 30 second validity window. Version 2.2.1 patches the issue.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v3.1

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Vikunja Vikunja
cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*
0.13 2.2.1