SB2026041477 - Authorization bypass through user-controlled key in kimai2
Published: April 14, 2026
Security Bulletin ID
SB2026041477
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Authorization bypass through user-controlled key (CVE-ID: CVE-2026-28685)
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.
Remediation
Install update from vendor's website.