CVE-2026-33315

MEDIUM

Vikunja <2.2.0 CalDAV Basic Auth - Two-Factor Authentication Bypass

Title source: manual
STIX 2.1

Description

Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.0, the Caldav endpoint allows login using Basic Authentication, which in turn allows users to bypass the TOTP on 2FA-enabled accounts. The user can then access standard project information that would normally be protected behind 2FA (if enabled), such as project name, description, etc. Version 2.2.0 patches the issue.

References (3)

Core 3

Scores

CVSS v3 4.3
EPSS 0.0030
EPSS Percentile 21.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-288
Status published
Products (3)
code.vikunja.io/api 0Go
go-vikunja/vikunja < 2.2.0
vikunja/vikunja < 2.2.0
Published Mar 24, 2026
Tracked Since Mar 24, 2026