Missing Authorization in kimai2 - CVE-2026-52822
Published: June 29, 2026
Vulnerability identifier: #VU135850
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-52822
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Kevin Papst
Affected software:
kimai2
kimai2
Detailed vulnerability description
The vulnerability allows a remote user to create new timesheet records under a revoked project and activity combination.
The vulnerability exists due to improper authorization in the timesheet restart and duplicate workflows when handling restart or duplicate requests for historical timesheet entries. A remote user can send a restart or duplicate request for an older owned timesheet to create new timesheet records under a revoked project and activity combination.
The issue affects the API restart and duplicate endpoints as well as the web duplicate flow that reaches the same save logic.
How to mitigate CVE-2026-52822
Install security update from vendor's website.