Vulnerability · Published Sep 15, 2026 · Assigned by GitHub_M
CVE-2026-52826Kimai: Improper Authorization in Kimai Project, Customer, and Activity Rate Edit Endpoints Allows Cross-Scope Rate Manipulation
Medium 5.3
In plain English
A medium-severity authorization bypass via user-controlled key in kimai from kimai. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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 without confirming that the ProjectRate, CustomerRate, or ActivityRate belongs to that parent. An authenticated user who can edit one parent object can pair it with a rate record from an unauthorized project, customer, or activity and persist changes to billing configuration in kimai2_projects_rates, kimai2_customers_rates, or kimai2_activities_rates. This issue is fixed in version 2.57.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | kimai/kimai | 2.57.0 | GHSA-2xgg-2x8h-8xw4 |
Affected products (as reported)
Weakness: CWE-285, CWE-639 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
References
- https://github.com/kimai/kimai/security/advisories/GHSA-2xgg-2x8h-8xw4 x_refsource_CONFIRM
- https://github.com/kimai/kimai/pull/5929 x_refsource_MISC
- https://github.com/kimai/kimai/commit/976d38e8a4485a1c923ee7b5841849e91a06e849 x_refsource_MISC
- https://github.com/kimai/kimai/releases/tag/2.57.0 x_refsource_MISC
- https://www.kimai.org/en/security/ghsa-2xgg-2x8h-8xw4 x_refsource_MISC