CVE-2026-33668 PUBLISHED

Vikunja Allows Disabled/Locked User Accounts to Authenticate via API Tokens, CalDAV, and OpenID Connect

Assigner: GitHub_M
Reserved: 23.03.2026 Published: 24.03.2026 Updated: 24.03.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS Score: 7.1

Product Status

Vendor go-vikunja
Product vikunja
Versions
  • Version >= 0.18.0, < 2.2.1 is affected

References

Problem Types

  • CWE-285: Improper Authorization CWE
  • CWE-863: Incorrect Authorization CWE