Vulnerability details
CVE-2026-55065
Vikunja: Improper Authorization and Authorization Bypass Through User-Controlled Key in code.vikunja.io/api
Official description
Vikunja is an open-source self-hosted task management platform. From 0.24.6 until 2.4.0, DELETE /api/v1/projects/:project/views/:view permits an authenticated user to supply a view identifier from another project while authorizing only against an attacker-controlled project identifier. ProjectView.CanDelete in pkg/models/project_view_permissions.go does not establish that the view belongs to the path project, and ProjectView.Delete in pkg/models/project_view.go continues after the scoped project_views delete affects no rows. Its subsequent deletes select task_buckets and task_positions only by project_view_id, allowing cross-tenant destruction of Kanban assignments and ordering while leaving the victim view and tasks intact. This issue is fixed in version 2.4.0.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.1High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| go-vikunja | vikunja | >= 0.24.6, < 2.4.0 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://github.com/go-vikunja/vikunja/pull/3239 x_refsource_MISC
- https://github.com/go-vikunja/vikunja/commit/6895a7765ef1667be4b79df29549d33b9e1ca9ca x_refsource_MISC
- https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0 x_refsource_MISC
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-gg93-x632-9ccv x_refsource_CONFIRM
Details
- Published
- 2026-08-28
- Last updated
- 2026-09-01
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-285Improper Authorization
- CWE-639Authorization Bypass Through User-Controlled Key