CVE-2026-57518: Pagekit

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Pagekit CMS 1.0.18 contains a privilege escalation vulnerability that allows authenticated users with the 'user: manage users' permission to escalate privileges by assigning arbitrary custom roles to themselves due to missing authorization checks in UserApiController::saveAction(). Attackers can assign themselves a custom role with the 'system: manage packages' permission and then upload and install a malicious PHP package through the admin package installer to achieve remote code execution.

Affected products

• Pagekit Pagekit: up to and including 1.0.18

Published 2026-06-26. Last modified 2026-07-14.