go-vikunja Vikunja up to 2.3.x Project View Permissions project_view.go ProjectView.Delete project/view improper authorization

Summaryinfo

A vulnerability was found in go-vikunja Vikunja up to 2.3.x and classified as problematic. Affected by this issue is the function ProjectView.Delete of the file pkg/models/project_view.go of the component Project View Permissions. Such manipulation of the argument project/view leads to improper authorization. This vulnerability is listed as CVE-2026-55065. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in go-vikunja Vikunja up to 2.3.x. Affected by this issue is the function ProjectView.Delete of the file pkg/models/project_view.go of the component Project View Permissions. The manipulation of the argument project/view with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-55065 since 06/16/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1548.002.

Upgrading to version 2.4.0 eliminates this vulnerability.

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Productinfo

Vendor

• go-vikunja

Name

• Vikunja

Version

• 2.0
• 2.1
• 2.2
• 2.3

Website

• Product: https://github.com/go-vikunja/vikunja/

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