CVE-2026-57309: Jcd Windu CMS

Critical severity, CVSS 9.3. EPSS: 0.5% chance of exploitation in the next 30 days.

A Blind SQL injection vulnerability has been identified in Windu CMS. A remote unauthenticated attacker is able to inject SQL syntax into URL path in HTTP header resulting in Blind SQL Injection. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 4.1 but may also affect other versions.

Affected products

• Jcd Windu CMS: version 4.1 only

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