CVE-2026-52826 Kimai: Improper Authorization in Kimai Project, Customer, and Activity Rate Edit Endpoints Allows Cross-Scope Rate Manipulation

Kimai is an open-source time tracking application. Prior to 2.57.0, GET or POST requests to /en/admin/project/id/rate/rate, /en/admin/customer/id/rate/rate, and /en/admin/activity/id/rate/rate independently resolve the authorized parent identifier and the attacker-selected child rate identifier...

Kimai: Improper Authorization in Project, Customer, and Activity Rate Edit Endpoints Allows Cross-Scope Rate Manipulation

Summary Kimai 2.56.0 contains an authenticated improper authorization vulnerability in the Web rate editing flows for projects, customers, and activities. A user who can edit one authorized parent object can combine that authorized parent ID with the rate ID of a different, unauthorized parent...