Description

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunja's scoped API token enforcement for custom project background routes is method-confused. A token with only projects.background can successfully delete a project background, while a token with only projects.background_delete is rejected. This is a scoped-token authorization bypass. This vulnerability is fixed in 2.3.0.

INFO

Published Date :

2026-04-10T16:12:27.603Z

Last Modified :

2026-04-15T14:45:18.303Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-40103 vulnerability.

Vendors Products
Go-vikunja
  • Vikunja
Vikunja
  • Vikunja
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-40103.

URL Resource
https://github.com/go-vikunja/vikunja/commit/6a0f39b252a81fa4b19dc56dc889183acc9225ae cve-icon cve-icon
https://github.com/go-vikunja/vikunja/pull/2584 cve-icon cve-icon
https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0 cve-icon cve-icon
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v479-vf79-mg83 cve-icon cve-icon
Login to claim this CVE

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact