PT-2026-81906

Kimai before 2.62.0 fails to validate create other timesheet permission in the QuickEntry controller when creating new timesheets. Authenticated users with view other timesheet and edit other timesheet permissions can create timesheet records for team members by submitting the QuickEntry form,...

PT-2026-81908

Name of the Vulnerable Software and Affected Versions Kimai versions prior to 2.63.0 Description An improper authorization and business logic issue exists in the 'PATCH /api/teams/id' API endpoint. The system removes all current team members before validating the new member list provided in the...

PT-2026-81912

Kimai before 2.54.0 contains a timing oracle vulnerability in TokenAuthenticator that allows unauthenticated attackers to enumerate valid usernames via X-AUTH-USER header. Attackers can measure response time differences when the password hasher runs only for existing users, enabling username...

PT-2026-81913

Name of the Vulnerable Software and Affected Versions Kimai versions prior to 2.53.0 Description An open redirect issue exists in the SAML authentication success handler. The system accepts unvalidated RelayState POST parameters as redirect destinations, allowing attackers with Identity Provider...

PT-2026-81914

Name of the Vulnerable Software and Affected Versions Kimai versions prior to 2.53.0 Description The Twig invoice template sandbox fails to block sensitive User methods. This allows users with template creation permissions to call the getApiToken and getPlainApiToken functions, leading to the...

PT-2026-81911

Kimai versions before 2.56.0 fail to restrict the config Twig function in sandboxed invoice and export templates, allowing administrators to access arbitrary configuration keys. Attackers with admin privileges can upload malicious templates to exfiltrate server-wide secrets including LDAP bind...

PT-2026-81910

Kimai before 2.57.0 contains an improper authorization vulnerability in the favorite timesheet add and remove endpoints that allows authenticated users to manipulate other users' bookmarks. Attackers can add or remove timesheet entries from another user's favorite list by referencing their...

PT-2026-81909

Kimai before 2.58.0 contains an authentication bypass vulnerability where password reset links remain valid after password changes because the LoginLink signature covers only the user id, not the password hash. Attackers who intercept or cache a password reset link can use it up to 2 additional...

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...

Improper Authentication

Overview Affected versions of this package are vulnerable to Improper Authentication via the authentication process. An attacker can gain unauthorized access to the REST API by replaying the KIMAISESSION cookie obtained after password verification, bypassing the second authentication factor...

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...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization through the add and remove endpoints for timesheet favorites. An attacker can manipulate another user's favorite bookmark state by referencing the victim's timesheet identifier, allowing unauthorized addition or...

Weak Password Recovery Mechanism for Forgotten Password

Overview Affected versions of this package are vulnerable to Weak Password Recovery Mechanism for Forgotten Password through the loginlink process. An attacker can gain unauthorized access to user accounts by reusing a previously issued password reset link after the password has been changed. Thi...