Known vulnerabilities in SSL Zen — SSL Certificate Installer & HTTPS Redirects

Free SSL certificate for WordPress — install a Let's Encrypt SSL, force HTTPS, fix mixed content and redirect HTTP to HTTPS. No coding needed.

6Reported vulnerabilities

6.5Highest CVSS score

4.7.42Latest version

10,000+Active installs

What to do now

Update SSL Zen — SSL Certificate Installer & HTTPS Redirects to 4.7.43 or later. 5 of these have a fixed version available. Updating resolves them.

Plugin last updated: July 11, 2026 / Tested up to WordPress: 7.0.4 / 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.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
CVE-2024-1076	Medium 6.5	0.4%	Before 4.6.0	`4.6.0`	May 8, 2024
CVE-2026-17577	Medium 6.1	0.3%	0 to 4.7.42 (inclusive)	`4.7.43`	September 25, 2026
CVE-2026-15463	Medium 6.1	0.1%	0 to 4.7.42 (inclusive)	`4.7.43`	September 19, 2026
CVE-2026-28569	Medium 6.1	0.3%	4.7.43 and earlier	—	August 17, 2026
CVE-2026-17602	Medium 4.9	0.6%	0 to 4.7.42 (inclusive)	`4.7.43`	September 25, 2026
CVE-2026-86781	Medium 4.3	0.2%	Before 4.7.40	`4.7.40`	September 11, 2026

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