CVE-2026-52828
Received Received - Intake

Export Template Manipulation in Kimai Time Tracking

Publication date: 2026-09-15

Last updated on: 2026-09-15

Assigner: GitHub, Inc.

Description
Kimai is an open-source time tracking application. Prior to 2.58.0, ExportController::createExportTemplate() and ExportController::editExportTemplate() inherit only the class-level create_export permission, which ROLE_TEAMLEAD receives by default, and omit the create_export_template permission required by the API routes and user interface. A teamlead can directly access the export template creation and editing web routes to create or modify global ExportTemplate records marked available to all users, altering export columns, renderer, format, and output used by other users and administrators. This issue is fixed in version 2.58.0.

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Meta Information

Published
2026-09-15
Last Modified
2026-09-15
Generated
2026-09-15
AI Q&A
2026-09-15
EPSS Evaluated
N/A
NVD
CVE-2026-52828
EUVD
EUVD-2026-78406

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
kimai kimai 2.58.0
kimai kimai to 2.58.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

CVE-2026-52828 is a missing authorization check in Kimai's ExportController for creating and editing export templates. While API routes and UI buttons require the stricter create_export_template permission, web routes only check for the broader create_export permission. This allows ROLE_TEAMLEAD users to modify global export templates visible to all users, potentially altering export formats and columns.

Detection Guidance

Check if your Kimai instance is running a vulnerable version (<=2.57.0) by running: grep -r "version" /path/to/kimai/composer.json. If the version is 2.57.0 or earlier, the system is affected.

Impact Analysis

A team lead could modify global export templates to change how data is exported for all users, including administrators. This could lead to unauthorized changes in export formats, columns, or output, potentially exposing or misrepresenting data. The impact is limited to data export manipulation and does not allow code execution or credential access.

Compliance Impact

This vulnerability could impact compliance by allowing unauthorized modifications to data export formats and columns, potentially leading to improper handling or disclosure of sensitive data. Organizations using affected Kimai versions may face compliance risks if export templates are altered to include or exclude data incorrectly.

Mitigation Strategies

Update Kimai to version 2.58.0 or later immediately. This can be done via Composer: composer require kimai/kimai:^2.58.0. Verify the update by checking the version in the admin panel or via the command line.

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