CVE-2026-52819 Details
Description
Kimai is an open-source time tracking application. Prior to 2.57.0, the GET /api/timesheets list endpoint accepts user and users[] target identifiers from a caller with view_other_timesheet but does not apply access_user or verify that a ROLE_TEAMLEAD requester leads a team containing each target user. TimesheetController::cgetAction() adds the resolved users directly to the query while project and customer filtering still permits records on unscoped projects or projects sharing ordinary team membership, allowing a teamlead to retrieve another user's descriptions, timing data, tags, rate, and internalRate even though GET /api/timesheets/{id} would deny access through TimesheetVoter. This issue is fixed in version 2.57.0.
An authorization bypass vulnerability has been identified in Kimai, an open-source time tracking application, in versions prior to 2.57.0. The issue arises in the 'GET /api/timesheets' endpoint, where users with the 'view_other_timesheet' permission can access timesheet records of other users without proper authorization checks. Specifically, team leads can retrieve records of users they do not supervise, violating access controls intended to protect sensitive timesheet data.
Users are advised to update to Kimai 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
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/kimai/kimai/security/advisories/GHSA-4m8q-55qv-9pwp | CISA-ADP | AdvisoryRemedyVendor |
| https://github.com/kimai/kimai/commit/976d38e8a4485a1c923ee7b5841849e91a06e849 | [email protected] | Source CodeVendor |
| https://github.com/kimai/kimai/pull/5929 | [email protected] | Source CodeVendor |
| https://github.com/kimai/kimai/releases/tag/2.57.0 | [email protected] | Release NotesVendor |
| https://github.com/kimai/kimai/security/advisories/GHSA-4m8q-55qv-9pwp | [email protected] | AdvisoryRemedyVendor |
| https://www.kimai.org/en/security/ghsa-4m8q-55qv-9pwp | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-863 | Incorrect Authorization | [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] |