CVE-2026-123527

Vikunja versions 2.4.0 before 2.7.1 are vulnerable to an authorization bypass caused by colliding v1 and v2 API token permission keys. This flaw allows token holders to perform unauthorized operations; specifically, attackers using a token scoped only to read project backgrounds can delete them v...

Vikunja: Scoped API tokens with projects.background permission can delete project backgrounds

Summary Vikunja's scoped API token enforcement for custom project background routes is method-confused. A token with only projects.background can successfully delete a project background, while a token with only projects.backgrounddelete is rejected. This is a scoped-token authorization bypass...

SUSE CVE-2026-33312

Vikunja is an open-source self-hosted task management platform. Starting in version 0.20.2 and prior to version 2.2.0, the DELETE /api/v1/projects/:project/background endpoint checks CanRead permission instead of CanUpdate, allowing any user with read-only access to a project to permanently delet...

GHSA-564F-WX8X-878H Vikunja read-only users can delete project background images via broken object-level authorization

Summary The DELETE /api/v1/projects/:project/background endpoint checks CanRead permission instead of CanUpdate, allowing any user with read-only access to a project to permanently delete its background image. Details The RemoveProjectBackground handler pkg/modules/background/handler/background.g...

EUVD-2026-13708

Vikunja read-only users can delete project background images via broken object-level authorization...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the RemoveProjectBackground process. An attacker can permanently delete background images by sending a DELETE request to the relevant API endpoint with only read-level permissions. Remediation Upgrade...

CVE-2026-33312 Read-only Vikunja users can delete project background images via broken object-level authorization

Vikunja is an open-source self-hosted task management platform. Starting in version 0.20.2 and prior to version 2.2.0, the DELETE /api/v1/projects/:project/background endpoint checks CanRead permission instead of CanUpdate, allowing any user with read-only access to a project to permanently delet...

CVE-2026-33312: Incorrect Authorization

Vikunja is an open-source self-hosted task management platform. Starting in version 0.20.2 and prior to version 2.2.0, the DELETE /api/v1/projects/:project/background endpoint checks CanRead permission instead of CanUpdate, allowing any user with read-only access to a project to permanently delet...