Kimai is an open-source time tracking application. In versions 2.52.0 and below, the User Preferences API endpoint (PATCH /api/users/{id}/preferences) applies submitted preference values without checking the isEnabled() flag on preference objects. Although the hourly_rate and internal_rate fields are correctly marked as disabled for users lacking the hourly-rate role permission, the API ignores this restriction and saves the values directly. Any authenticated user can modify their own billing rates through this endpoint, resulting in unauthorized financial tampering affecting invoices and timesheet calculations. This issue has been fixed in version 2.53.0.
History

Sat, 18 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
First Time appeared Kimai
Kimai kimai
Vendors & Products Kimai
Kimai kimai

Fri, 17 Apr 2026 22:45:00 +0000

Type Values Removed Values Added
Description Kimai is an open-source time tracking application. In versions 2.52.0 and below, the User Preferences API endpoint (PATCH /api/users/{id}/preferences) applies submitted preference values without checking the isEnabled() flag on preference objects. Although the hourly_rate and internal_rate fields are correctly marked as disabled for users lacking the hourly-rate role permission, the API ignores this restriction and saves the values directly. Any authenticated user can modify their own billing rates through this endpoint, resulting in unauthorized financial tampering affecting invoices and timesheet calculations. This issue has been fixed in version 2.53.0.
Title Kimai's User Preferences API allows standard users to modify restricted attributes: hourly_rate, internal_rate
Weaknesses CWE-915
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-17T22:35:53.543Z

Updated: 2026-04-17T22:35:53.543Z

Reserved: 2026-04-13T19:50:42.114Z

Link: CVE-2026-40486

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-17T23:16:12.593

Modified: 2026-04-17T23:16:12.593

Link: CVE-2026-40486

cve-icon Redhat

No data.