---
id: CVE-2026-15463
title: >-
  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 a…
summary: >-
  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 a…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: sslzen
product: SSL Zen — SSL Certificate Installer & HTTPS Redirects
affected:
  - ssl_zen_ssl_certificate_installer_https_redirects <= 4.7.42
published: '2026-09-19'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T13:33:33.387'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15463'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/ssl-zen/tags/4.7.41/ssl_zen/classes/class.ssl_zen_admin.php#L863
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ssl-zen/tags/4.7.41/ssl_zen/classes/class.ssl_zen_messages.php#L44
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3701590%40ssl-zen&new=3701590%40ssl-zen
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/5e392d3c-4a3d-4b5b-a149-70c9b58dca1a?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
epss: 0.00136
epssPercentile: 0.03424
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-19T13:23:37.166546Z'
ingestedAt: '2026-09-19T07:59:56.109Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.