Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-40103

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 8.3%
CVSS Severity
CVSS v3 Score 4.3
Products affected by CVE-2026-40103


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