CVE-2026-33668 Details
Description
Vikunja is an open-source self-hosted task management platform. Starting in version 0.18.0 and prior to version 2.2.1, when a user account is disabled or locked, the status check is only enforced on the local login and JWT token refresh paths. Three other authentication paths — API tokens, CalDAV basic auth, and OpenID Connect — do not verify user status, allowing disabled or locked users to continue accessing the API and syncing data. Version 2.2.1 patches the issue.
A vulnerability in Vikunja, a self-hosted task management platform, allows disabled or locked user accounts to bypass authentication restrictions and access the API through API tokens, CalDAV basic authentication, and OpenID Connect. This issue is present in Vikunja versions 0.18.0 prior to 2.2.1. The vulnerability arises because the status checks for user accounts are only enforced during local login and JWT token refresh processes, leaving other authentication methods unprotected. As a result, disabled or locked users can continue to sync data and use the API, undermining the account management features intended to restrict access.
Users can update to Vikunja version 2.2.1 or later, where this vulnerability has been patched. Instructions for updating are available in the Vikunja documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 26, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-285 | Improper Authorization | [email protected] |
| CWE-863 | Incorrect Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| vikunja vikunja | >= 0.18.0, < 2.2.1 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 27, 2026 | Initial Analysis | [email protected] |
| Mar 24, 2026 | New CVE Received | [email protected] |