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CVE-2026-52828— Kimai: ExportTemplate CRUD Missing Authorization Check Allows Unauthorized TEAMLEAD Access

Quick assessment

Affected
kimai kimai
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kimai 是一款开源的工时追踪应用。在 2.58.0 版本之前，ExportController::createExportTemplate() 和 ExportController::editExportTemplate() 方法仅继承了类级别的 create_export 权限，而该权限默认授予 ROLE_TEAMLEAD 角色，却缺少了 API 路由和用户界面所要求的 create_export_template 权限。因此，团队负责人（teamlead）可以直接访问导出模板的创建和编辑网页路由，从而创建或

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-52828

Vulnerability Information
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Vulnerability Title
Kimai: ExportTemplate CRUD Missing Authorization Check Allows Unauthorized TEAMLEAD Access
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
kimai kimai < 2.58.0 -

II. Public POCs for CVE-2026-52828

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III. Intelligence Information for CVE-2026-52828

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Patches & Fixes for CVE-2026-52828 (1)

Vendor Pages for CVE-2026-52828 (2)

Same Patch Batch · kimai · 2026-09-15 · 10 CVEs total

CVE-2026-52824 9.1 CRITICAL Kimai: Default APP_SECRET in Docker Image Enables Cookie Forgery and Account Takeover
CVE-2026-52827 7.1 HIGH Kimai: Two-factor authentication bypass on the Kimai API
CVE-2026-52819 6.3 MEDIUM Kimai: Teamlead authorization bypass in GET /api/timesheets allows reading other users' ti
CVE-2026-52825 5.3 MEDIUM Kimai: Improper Authorization in Kimai Team Member and Team Activity Assignment APIs Allow
CVE-2026-52820 5.3 MEDIUM Kimai: Timesheet PATCH/POST allows assigning to project outside user's team via query_buil
CVE-2026-52823 5.3 MEDIUM Kimai: Login CSRF in Kimai Timesheet Stop and Restart API Endpoints Allows Unauthorized St
CVE-2026-52821 5.3 MEDIUM Kimai: Improper Authorization in Kimai Activity Creation with Preset Project Allows Creati
CVE-2026-52826 5.3 MEDIUM Kimai: Improper Authorization in Kimai Project, Customer, and Activity Rate Edit Endpoints
CVE-2026-52822 5.3 MEDIUM Kimai: Improper Authorization in Kimai Timesheet Restart and Duplicate Allows New Timeshee

IV. Related Vulnerabilities

Same product: kimai
Same vendor: kimai
Same weakness: CWE-862

V. Comments for CVE-2026-52828

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