CVE-2026-40486: Kimai's User Preferences API allows standard users to modify restricted attributes: hourly_rate, internal_rate

April 15, 2026 (updated April 27, 2026)

A Mass Assignment / Broken Object Property Level Authorization (BOPA) vulnerability in the User Preferences API allows any authenticated user (even those with the lowest privileges) to arbitrarily modify restricted financial attributes on their profile, specifically their hourly_rate and internal_rate.

References

github.com/advisories/GHSA-qh43-xrjm-4ggp
github.com/kimai/kimai
github.com/kimai/kimai/releases/tag/2.53.0
github.com/kimai/kimai/security/advisories/GHSA-qh43-xrjm-4ggp
nvd.nist.gov/vuln/detail/CVE-2026-40486

Code Behaviors & Features

Detect and mitigate CVE-2026-40486 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →