Improper access control in kimai2 - CVE-2026-84805
Published: August 19, 2026 / Updated: September 14, 2026
Vulnerability identifier: #VU144294
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84805
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to modify admin-only work-contract fields.
The vulnerability exists due to improper access control in the PATCH /api/users/{id}/preferences endpoint when handling submitted user preferences. A remote user can send a crafted API request to modify admin-only work-contract fields.
The issue affects work-contract preferences registered by WorkContractPreferenceSubscriber, while the web interface path for editing these fields is administrator-gated.
Affected software
kimai2
How to mitigate CVE-2026-84805
Install security update from vendor's website.
kimai2 - update to 2.63.0