CVE-2026-84805 Kimai 2.61.0 before 2.63.0 Authentication Bypass via API
Authenticated low-privilege users can modify admin-only work-contract preferences via the API due to missing permission checks.
- 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-2026-84805?
CVE-2026-84805 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 from 2.61.0 before 2.63.0 fail to disable admin-only work-contract preferences for low-privilege users in the PATCH /api/users/{id}/preferences endpoint. Although the web interface gates these employment-contract fields behind the contract_other_profile admin permission, the WorkContractPreferenceSubscriber (introduced in 2.61.0) registers the preferences as enabled without a permission check, so an authenticated regular user can use the API to modify their own admin-only work-contract data. The issue is fixed in 2.63.0 by applying the same permission check to the API endpoint.
Weakness: CWE-862
Which versions are affected by CVE-2026-84805?
How do I fix CVE-2026-84805?
No fix has been published for CVE-2026-84805 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-2026-84805 being exploited?
There is no known exploitation of CVE-2026-84805 in the wild and no public exploit code.
Sources
Also known as GHSA-5mpc-5cg2-g99r, GHSA-785m-wqjq-q2rm.