What’s Vulnerable › Vulnerabilities

CVE-2026-15463: SSL Zen <= 4.7.42 - Reflected Cross-Site Scripting via 'uri' and 'host' Parameters

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-19 · updated 2026-09-21
• Weakness: CWE-79

Description

The SSL Zen — SSL Certificate Installer & HTTPS Redirects plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'host' parameter in all versions up to, and including, 4.7.42 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The vulnerability is only exploitable when in the system_requirements stage.

Affected products

• sslzen SSL Zen — SSL Certificate Installer & HTTPS Redirects: through 4.7.42

References

• https://plugins.trac.wordpress.org/browser/ssl-zen/tags/4.7.41/ssl_zen/classes/class.ssl_zen_admin.php#L863
• https://plugins.trac.wordpress.org/browser/ssl-zen/tags/4.7.41/ssl_zen/classes/class.ssl_zen_messages.php#L44
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3701590%40ssl-zen&new=3701590%40ssl-zen
• https://www.wordfence.com/threat-intel/vulnerabilities/id/5e392d3c-4a3d-4b5b-a149-70c9b58dca1a?source=cve

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