CVE-2026-111920
Vikunja 2.6.0 Broken Access Control via Inherited Project Permissions
- State
- Published
- Severity
- 5.3 Medium
- Published
- Oct 17, 2026
- Updated
- Oct 18, 2026
- Reserved
- Oct 17, 2026
Description
Vikunja 2.6.0 contains a broken access control flaw in getProjectAccessForUser (pkg/models/project_access.go), which resolves a user's effective project permission as the maximum over the project tree, silently overriding explicit lower-permission shares on sub-projects. A collaborator with write access on a parent project but read-only access to a child project can modify the child project's tasks and content.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N | VulnCheck |
Weaknesses
- CWE-269 Improper Privilege Management
Affected Products
| Product | Versions |
|---|---|
vikunjago-vikunja |
|
References
- GitHub Security Advisory (GHSA-pjr3-86v4-5p7w)vendor-advisory
- VulnCheck Advisory: Vikunja 2.6.0 Broken Access Control via Inherited Project Permissionsthird-party-advisory
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