WP Vulnerability WatchVulnerability data as of September 7, 2026

Known vulnerabilities in NinjaFirewall (WP Edition) – Advanced Security Plugin and Firewall

A true Web Application Firewall to protect and secure WordPress.

1Reported vulnerabilities
7.2Highest CVSS score
4.9Latest version
100,000+Active installs

What to do now

Update NinjaFirewall (WP Edition) – Advanced Security Plugin and Firewall to 4.3.4 or later. 1 of these have a fixed version available. Updating resolves them.

Plugin last updated: August 16, 2026 / Tested up to WordPress: 7.1 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVESeverityExploit probability
next 30 days		 Affected versionsFixed inPublished
CVE-2021-4451 High 7.2 0.6% 4.3.3 and earlier 4.3.4 October 16, 2024

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.