CVE-2026-40103
Vikunja's Scoped API tokens with projects.background permission can delete project backgrounds
- State
- Published
- Severity
- 4.3 Medium
- Published
- Apr 10, 2026
- Updated
- Apr 15, 2026
- Reserved
- Apr 9, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N | GitHub_M |
Weaknesses
- CWE-836 Use of Password Hash Instead of Password for Authentication
Affected Products
| Product | Versions |
|---|---|
vikunjago-vikunja |
|
References
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