CVE-2026-84808 Kimai before 2.65.0 Authorization Bypass via API Timesheet
Attackers with view permissions can access restricted team timesheets via the API, bypassing data isolation controls in Kimai.
- 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-2026-84808?
CVE-2026-84808 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 versions before 2.65.0 contain an authorization bypass vulnerability in the REST API timesheet collection endpoint that fails to enforce activity-team access controls. Users with view_other_timesheet permission can list timesheets using activities restricted to teams they do not belong to, bypassing intended data isolation.
Weakness: CWE-863
Which versions are affected by CVE-2026-84808?
How do I fix CVE-2026-84808?
No fix has been published for CVE-2026-84808 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-2026-84808 being exploited?
There is no known exploitation of CVE-2026-84808 in the wild and no public exploit code.
Sources
Also known as GHSA-c4jr-h3rc-c3hg, GHSA-c6j4-35fc-x3hw.