CVE-2026-52779

OpenProject prior to versions 17.3.3 and 17.4.1 contains a cross-project IDOR/authorization context confusion in the Calendar and Team Planner modules. A user with management permissions in one project can delete public Calendar or Team Planner Queries from another project where they lack corresp...

CVE-2026-52779 OpenProject: Cross-project authorization bypass allows deleting public Calendar and Team Planner queries from unauthorized projects

OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, a cross-project IDOR / authorization context confusion in the Calendar and Team Planner modules allows a user with management permissions in one project to delete public Calendar or Team Planner Queries...