CVE-2023-53923: Ulicms

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

UliCMS 2023.1 contains a privilege escalation vulnerability that allows unauthenticated attackers to create administrative accounts through the UserController endpoint. Attackers can send a crafted POST request to /dist/admin/index.php with specific parameters to generate a new admin user with full system access.

Affected products

• Ulicms Ulicms: version 2023.1 only

Published 2025-12-17. Last modified 2026-06-17.