CVE-2026-67528 OpenProject: Improper Access Control through /api/v3/custom_options/:id via Path "id" leads to Sensitive Data Exposure

OpenProject is open-source, web-based project management software. Prior to 17.6.0, GET /api/v3/customoptions/:id resolved CustomOption records by global numeric id and allowed UserCustomField and GroupCustomField options without checking visiblecurrentuser, so authenticated non-admin users could...