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.
- CVSS 3.1
- 5.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L - EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 12% of CVEs (scores of 2026-10-26)
- CWE
- CWE-836
- Published
- Modified
- Record from
- the NVD, synced
Affected
- vikunja:vikunja
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-v479-vf79-mg83 | Go | code.vikunja.io/api | <2.3.0 | 2.3.0 |
| GO-2026-5650 | Go | code.vikunja.io/api | all versions | no fix published |