CVE-2026-40486

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.

Affected products

Kimai

Kimai

< 2.53.0

Fix

Available

CVSS 3.1

4.3 MEDIUM

EPSS

0.3% (19th percentile)

Weakness

CWE-915

NVD status

Analyzed

Published

2026-04-17

No exploit for CVE-2026-40486 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.