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.
Published: 2026-09-15
Score: 6.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Github GHSA Github GHSA GHSA-4m8q-55qv-9pwp Kimai: Teamlead authorization bypass in GET /api/timesheets allows reading other users' timesheet records without being teamlead of the target
History

Tue, 15 Sep 2026 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Kimai
Kimai kimai
Vendors & Products Kimai
Kimai kimai

Tue, 15 Sep 2026 10:45:00 +0000

Type Values Removed Values Added
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.
Title Kimai: Teamlead authorization bypass in GET /api/timesheets allows reading other users' timesheet records without being teamlead of the target
Weaknesses CWE-863
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-15T10:36:02.531Z

Reserved: 2026-06-08T18:11:06.661Z

Link: CVE-2026-52819

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-15T11:17:08.800

Modified: 2026-09-15T11:17:08.800

Link: CVE-2026-52819

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-15T11:30:11Z

Weaknesses