CVE-2026-54766
Vikunja has a project duplication bypasses write-permission check on the target parent project
Impact
Vikunja is an open-source self-hosted task management platform. From 0.21.0 until 2.4.0, the project duplication operation in pkg/models/project_duplicate.go allows an authenticated user who can read a source project to place its duplicate beneath an arbitrary target parent project. ProjectDuplicate.CanCreate calls parent.CanCreate on an unhydrated Project containing only the body supplied parent_project_id instead of calling parent.CanWrite, so the target parent write-permission check is skipped. The ordinary project creation path enforces that permission, but PUT /api/v1/projects/{project}/duplicate does not, allowing attacker-owned content to be injected into another user or team project hierarchy. This issue is fixed in version 2.4.0.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | code.vikunja.io/api | >= 0.21.0, <= 2.3.0 | 2.4.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-f27p-pw2p-9pr4
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-f27p-pw2p-9pr4
- https://github.com/go-vikunja/vikunja/pull/3239
- https://github.com/go-vikunja/vikunja/commit/d911caaa11c748c3abc6b98b3189afea2677bcb0
- https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0