CVE-2026-52826 Details
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.
A vulnerability exists in Kimai, an open-source time tracking application, in versions prior to 2.57.0. The issue arises in the web interfaces for editing rates associated with projects, customers, and activities. The vulnerability allows an authenticated user to manipulate rate records across different scopes by exploiting a lack of proper authorization checks. Specifically, the application fails to verify that the rate being edited belongs to the same parent entity as the one the user is authorized to modify. This flaw enables cross-project, cross-customer, or cross-activity tampering with billing-related configurations, potentially disrupting financial reporting and invoice generation.
Users are advised to update Kimai to version 2.57.0 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 15, 2026CISA-ADP
Assessed Sep 15, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/kimai/kimai/commit/976d38e8a4485a1c923ee7b5841849e91a06e849 | [email protected] | Source CodeVendor |
| https://github.com/kimai/kimai/pull/5929 | [email protected] | Issue TrackingVendor |
| https://github.com/kimai/kimai/releases/tag/2.57.0 | [email protected] | Release NotesVendor |
| https://github.com/kimai/kimai/security/advisories/GHSA-2xgg-2x8h-8xw4 | [email protected] | AdvisoryRemedyVendor |
| https://www.kimai.org/en/security/ghsa-2xgg-2x8h-8xw4 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-285 | Improper Authorization | [email protected] |
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Kimai | <= 2.56.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 15, 2026 | CVE Modified | CISA-ADP |
| Sep 15, 2026 | New CVE Received | [email protected] |