CVE-2026-52828 Kimai: ExportTemplate CRUD Missing Authorization Check Allows Unauthorized TEAMLEAD Access
A teamlead can bypass authorization checks to create or modify global export templates, altering export settings for all users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-52828?
CVE-2026-52828 is a medium-severity missing authorization vulnerability in kimai, published on 15 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-52828?
2 open source packages ship an affected version, including kimai/kimai.
| Package | Affected | Fixed in |
|---|---|---|
kimai/kimai Packagist | All versions | 2.58.0 |
kimai/kimai Packagist | All versions | 2.58.0 |
How do I fix CVE-2026-52828?
Upgrade kimai/kimai to 2.58.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-52828 being exploited?
There is no known exploitation of CVE-2026-52828 in the wild and no public exploit code.
Sources
Also known as GHSA-rw46-qg69-vg6h.