CVE-2026-84806: Kimai before 2.63.0 Authorization Bypass via Team Access Endpoints
Kimai before 2.63.0 contains an improper authorization vulnerability in team access endpoints that allows authenticated users with team edit permissions and read-only access to grant team access to customers, projects, or activities. Attackers can exploit insufficient permission checks by sending POST requests to team access endpoints to modify access control lists for entities they should not be able to modify.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker must be authenticated and have team edit permissions plus read-only access. They can then target team access endpoints to grant team access to customers, projects, or activities.
Are deployments running version 2.63.0 affected?
No. The issue affects Kimai versions before 2.63.0.
What is the impact of successful exploitation?
A successful attacker can modify access-control lists for customers, projects, or activities that they should not be permitted to modify. This can expose those entities to the team whose access was granted.