CVE-2023-39343: Sulu

Medium severity, CVSS 4.3. EPSS: 0.6% chance of exploitation in the next 30 days.

Sulu is an open-source PHP content management system based on the Symfony framework. It allows over the Admin Login form to detect which user (username, email) exists and which one do not exist. Sulu Installation not using the old Symfony 5.4 security System and previous version are not impacted by this Security issue. The vulnerability has been patched in version 2.5.10.

Affected products

• Sulu Sulu: from 2.5.0, before 2.5.10 (fixed in 2.5.10)

Published 2023-08-04. Last modified 2026-06-17.