GHSA-V8HX-4VX8-WC96 Kimai: Pre-2FA KIMAI_SESSION cookie grants full authenticated REST API access, bypassing TOTP

Summary Two-factor authentication TOTP can be fully bypassed for the REST API. The KIMAISESSION cookie returned in the response to the login request; issued after only the password is verified, before the TOTP step; is already accepted as authenticated by every /api/ endpoint. So after submitting...

GHSA-JR9P-4H4J-6C58 Kimai: Default APP_SECRET in Docker Image Enables Cookie Forgery and Account Takeover

Summary The official Kimai Docker image ships with APPSECRET=changethistosomethingunique as the default environment variable. The Docker entrypoint does not override or validate this value. Any Kimai instance deployed using the Docker image without explicitly setting APPSECRET runs with a...

Insecure Default Initialization of Resource

Overview Affected versions of this package are vulnerable to Insecure Default Initialization of Resource through the use of a default APPSECRET value in the Docker deployment process. An attacker can gain unauthorized access to any user account, including administrative accounts, by forging...

GHSA-R8VR-M544-QH4H Kimai: Login CSRF in the Timesheet Stop and Restart API Endpoints Allows Unauthorized State Changes

Summary Kimai 2.56.0 contains authenticated cross-site request forgery issues in its timesheet state-changing API endpoints. The application reuses the browser's existing session for /api/ requests, and both the stop and restart operations are exposed through GET and PATCH routes that directly...

GHSA-C6W6-57JJ-62VH Improper Authorization in Kimai Timesheet Restart and Duplicate Allows New Timesheets After Project Access Revocation

Summary Kimai 2.56.0 contains an authenticated authorization bypass in the timesheet restart and duplicate workflows. After a user loses access to a project, the user can still derive a new timesheet from one of their historical entries and create a new record under that now-unauthorized project...

PT-2026-60091

Name of the Vulnerable Software and Affected Versions Kimai versions prior to 2.58.0 Description The official Docker image includes a default environment variable APP SECRET set to a publicly known value. Because the Docker entrypoint does not validate or override this value, instances deployed...

GHSA-PGCC-VFMC-7CW5 Kimai: Login CSRF in Default Team Creation Endpoints Allows Unauthorized Team and Permission Structure Changes

Summary Kimai 2.56.0 contains authenticated cross-site request forgery issues in its default team creation shortcuts for projects, customers, and activities. These endpoints are exposed through GET routes and directly create or reuse a Team, add the current user as teamlead, and bind the target...

GHSA-PJ8J-P4G4-4VW8 Kimai has Server-Side Request Forgery in Invoice PDF Rendering via Markdown Image URLs

Summary Kimai 2.56.0 contains a server-side request forgery vulnerability in its invoice PDF preview and generation workflow. If an attacker can control Markdown content that is later rendered into an invoice PDF, such as Customer.invoiceText, the server-side PDF renderer will fetch remote image...

GHSA-J5MC-P8QG-39J7 Kimai Favorite Timesheet Add and Remove Endpoints Allows Cross-User Bookmark Manipulation

Summary Kimai 2.56.0 contains an authenticated improper authorization / IDOR vulnerability in the favorite timesheet add and remove endpoints. A low-privileged user who knows another user's timesheet.id can add that record to, or remove it from, the victim's favorite/recent bookmark list. This...

CVE-2026-42267

Kimai is an open-source time tracking application. From version 2.27.0 to before version 2.54.0, any ROLEUSER can create a tag with a formula string as its name e.g. =SUM54+51 via POST /api/tags and assign it to a timesheet. When an admin exports timesheets to XLSX, ArrayFormatter.formatValue joi...

CVE-2026-44298

Kimai is an open-source time tracking application. From version 2.32.0 to before version 2.56.0, users with the role System-Admin ROLESYSTEADMIN and the permission uploadinvoicetemplate can upload PDF invoice templates, which can call pdfContext.setOption'associatedfiles', ... inside the sandboxe...

EUVD-2026-28517

Kimai has an arbitrary file read in its invoice PDF renderer admin...

GHSA-H5FH-7HWR-97MW Kimai has an arbitrary file read in its invoice PDF renderer (admin)

Summary Users with the role System-Admin ROLESYSTEADMIN and the permission uploadinvoicetemplate can upload PDF invoice templates, which can call pdfContext.setOption'associatedfiles', ... inside the sandboxed Twig render. This is forwarded to mPDF's SetAssociatedFiles, whose writer calls...

CVE-2026-44298

Kimai is an open-source time tracking application. From version 2.32.0 to before version 2.56.0, users with the role System-Admin ROLESYSTEADMIN and the permission uploadinvoicetemplate can upload PDF invoice templates, which can call pdfContext.setOption'associatedfiles', ... inside the sandboxe...

CVE-2026-41498

Kimai is an open-source time tracking application. Prior to version 2.54.0, the Team API endpoints use IsGranted'editteam' instead of IsGranted'edit', 'team', causing Symfony TeamVoter to abstain from voting. This removes entity-level ownership checks on team operations, allowing any user with th...

CVE-2026-44298 Kimai: Arbitrary file read in invoice PDF renderer (admin)

Kimai is an open-source time tracking application. From version 2.32.0 to before version 2.56.0, users with the role System-Admin ROLESYSTEADMIN and the permission uploadinvoicetemplate can upload PDF invoice templates, which can call pdfContext.setOption'associatedfiles', ... inside the sandboxe...

CVE-2026-44298 Kimai: Arbitrary file read in invoice PDF renderer (admin)

Kimai is an open-source time tracking application. From version 2.32.0 to before version 2.56.0, users with the role System-Admin ROLESYSTEADMIN and the permission uploadinvoicetemplate can upload PDF invoice templates, which can call pdfContext.setOption'associatedfiles', ... inside the sandboxe...

CVE-2026-44298 Kimai: Arbitrary file read in invoice PDF renderer (admin)

Kimai is an open-source time tracking application. From version 2.32.0 to before version 2.56.0, users with the role System-Admin ROLESYSTEADMIN and the permission uploadinvoicetemplate can upload PDF invoice templates, which can call pdfContext.setOption'associatedfiles', ... inside the sandboxe...

CVE-2026-44298

The Kimai CVE-2026-44298 affects Kimai versions 2.32.0–2.55.x. It enables an admin user with upload_invoice_template permission to trigger pdfContext.setOption('associated_files', ...) during sandboxed Twig rendering, forwarding to mPDF2 SetAssociatedFiles() and allowing file_get_contents() on e...

CVE-2026-44298

Kimai is an open-source time tracking application. From version 2.32.0 to before version 2.56.0, users with the role System-Admin ROLESYSTEADMIN and the permission uploadinvoicetemplate can upload PDF invoice templates, which can call pdfContext.setOption'associatedfiles', ... inside the sandboxe...