Authorization bypass through user-controlled key in kimai2 - CVE-2026-28685
Published: April 14, 2026
Vulnerability identifier: #VU125947
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-28685
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive financial information.
The vulnerability exists due to improper access control in the GET /api/invoices/{id} endpoint when handling requests for invoice records by ID. A remote user can request an invoice belonging to a customer assigned to another team to disclose sensitive financial information.
The issue affects the single-item API endpoint, which does not verify access to the invoice's customer, unlike the corresponding web controller.
Affected software
kimai2
How to mitigate CVE-2026-28685
Install security update from vendor's website.
kimai2 - update to 2.51.0