PT-2026-33218 · Kimai · Kimai

Udaypali · Published 2026-04-15 · Updated 2026-04-27 · CVE-2026-40486

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Kimai versions prior to 2.53.0

Description A Mass Assignment and Broken Object Property Level Authorization issue exists in the User Preferences API. The endpoint '/api/users/{id}/preferences' fails to check the isEnabled() flag on preference objects when applying submitted values. This allows any authenticated user to bypass role-based access controls and modify restricted financial attributes, specifically the hourly rate and internal rate variables, even if they lack the required hourly-rate role permission. This can lead to unauthorized financial tampering affecting invoices and timesheet calculations.

Recommendations Update to version 2.53.0. As a temporary workaround, restrict access to the '/api/users/{id}/preferences' endpoint to minimize the risk of exploitation.

Fix

Weakness Enumeration

CWE-915

Related Identifiers

CVE-2026-40486

GHSA-QH43-XRJM-4GGP

Affected Products

Kimai

References · 7

• https://github.com/kimai/kimai/security/advisories/GHSA-qh43-xrjm-4ggp · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-qh43-xrjm-4ggp · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40486 · Security Note
• https://github.com/kimai/kimai · Note
• https://github.com/kimai/kimai/releases/tag/2.53.0 · Note
• https://t.me/cveNotify/161148 · Telegram Post
• https://twitter.com/CVEnew/status/2045467370244681751 · Twitter Post