Moderate severityNVD Advisory· Published Mar 24, 2026· Updated Mar 24, 2026
Vikunja has a 2FA Bypass via Caldav Basic Auth
CVE-2026-33315
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
code.vikunja.io/apiGo | <= 2.1.0 | — |
Affected products
3- ghsa-coords2 versions
<= 2.1.0+ 1 more
- (no CPE)range: <= 2.1.0
- (no CPE)range: < 0.0.20260326T203309-150000.1.155.2
- go-vikunja/vikunjav5Range: < 2.2.0
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-47cr-f226-r4pqghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-33315ghsaADVISORY
- github.com/go-vikunja/vikunja/commit/cdf5d30a425d032f749b78b98b828f25ad882615ghsax_refsource_MISCWEB
- github.com/go-vikunja/vikunja/security/advisories/GHSA-47cr-f226-r4pqghsax_refsource_CONFIRMWEB
- vikunja.io/changelog/vikunja-v2.2.0-was-releasedghsax_refsource_MISCWEB
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