CVE-2026-16337: dotCMS

Critical severity, CVSS 9.4. EPSS: 0.6% chance of exploitation in the next 30 days.

Improper authorization in the ToolGroupResource and RoleAjax REST/DWR endpoints in dotCMS dotCMS 21.02 through 26.06.22-03 on all platforms allows a low-privileged authenticated backend user to self-assign the administrative layout and self-grant the CMS Administrator role, then achieve remote code execution via a crafted OSGi bundle upload whose BundleActivator executes arbitrary shell commands.

Affected products

• dotCMS dotCMS: from 21.02, up to and including 26.06.22-03

Published 2026-07-20. Last modified 2026-07-22.