CVE-2026-84804 Kimai before 2.65.0 Authorization Bypass via Team Activity API
Authenticated users with edit_team permission can bypass authorization checks to revoke team access to activities, projects, and customers via API.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-84804?
CVE-2026-84804 is a medium-severity missing authorization vulnerability in kimai, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Kimai before 2.65.0 fails to properly validate permissions when removing team access to activities, projects, and customers via API endpoints. Authenticated users with edit_team permission can revoke team access without the required permissions_activity check, bypassing authorization controls.
Weakness: CWE-284
Which versions are affected by CVE-2026-84804?
How do I fix CVE-2026-84804?
No fix has been published for CVE-2026-84804 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-84804 being exploited?
There is no known exploitation of CVE-2026-84804 in the wild and no public exploit code.
Sources
Also known as GHSA-mc86-77vp-82g3, GHSA-xcvc-fv83-5g8g.