CVE-2026-40103CWE-836

Vikunja's Scoped API tokens with projects.background permission can delete project backgrounds

Medium · published April 10, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
12.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00222 · 12.7th percentile
Weakness
CWE-836 · Use of Password Hash Instead of Password for Authentication
Published
2026-04-10T16:12Z
EPSS history
Timeline
  • 10 APR 16:12Z
    Vikunja's Scoped API tokens with projects.background permission can delete project backgrounds
    cvelistv5