Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kimai | Kimai | < 2.53.0 |
Related Weaknesses (CWE)
References
- https://github.com/kimai/kimai/releases/tag/2.53.0ProductRelease Notes
- https://github.com/kimai/kimai/security/advisories/GHSA-qh43-xrjm-4ggpExploitVendor Advisory
FAQ
What is CVE-2026-40486?
CVE-2026-40486 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 check...
How severe is CVE-2026-40486?
CVE-2026-40486 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-40486?
Check the references section above for vendor advisories and patch information. Affected products include: Kimai Kimai.