← Back to CVEs

CVE-2026-40103

MEDIUM

4.3

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.

CVE Details

CVSS v3.1 Score4.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published4/10/2026

Last Modified4/17/2026

Sourcenvd

Honeypot Sightings0

Affected Products

vikunja:vikunja

Weaknesses (CWE)

CWE-836

References

https://github.com/go-vikunja/vikunja/commit/6a0f39b252a81fa4b19dc56dc889183acc9225ae(security-advisories@github.com)

https://github.com/go-vikunja/vikunja/pull/2584(security-advisories@github.com)

https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0(security-advisories@github.com)

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v479-vf79-mg83(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.