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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.

PUBLISHED Reserved 2026-03-18 | Published 2026-03-24 | Updated 2026-03-24 | Assigner GitHub_M




MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-288: Authentication Bypass Using an Alternate Path or Channel

Product status

< 2.2.0
affected

References

github.com/...ikunja/security/advisories/GHSA-47cr-f226-r4pq

github.com/...ommit/cdf5d30a425d032f749b78b98b828f25ad882615

vikunja.io/changelog/vikunja-v2.2.0-was-released

cve.org (CVE-2026-33315)

nvd.nist.gov (CVE-2026-33315)

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