Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://github.com/go-vikunja/vikunja/commit/d911caaa11c748c3abc6b98b3189afea267
- https://github.com/go-vikunja/vikunja/pull/3239
- https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-f27p-pw2p-9pr4
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-f27p-pw2p-9pr4
FAQ
What is CVE-2026-54766?
CVE-2026-54766 is a documented vulnerability. 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 ...
How severe is CVE-2026-54766?
CVSS scoring is not yet available for CVE-2026-54766. Check NVD for updates.
Is there a patch for CVE-2026-54766?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.