CVE-2026-15463: SSL Zen <= 4.7.42 - Reflected Cross-Site Scripting via 'uri' and 'host' Parameters
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 systemrequirements stage.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue, and what interaction is required?
An unauthenticated attacker can attempt exploitation, but must persuade a user to perform an action such as clicking a crafted link. Successful exploitation can run injected script in the affected page's context.
When is an installation exposed?
The issue is only exploitable while the plugin is in the system_requirements stage. Installations not in that stage are not described as exploitable by the available information.
Which plugin versions are affected?
All SSL Zen versions up to and including 4.7.42 are affected.