HomeWordPress vulnerabilitiesSSL Zen
SSL Zen vulnerabilities
SSL Zen has 5 known vulnerabilities in this database. The most recent published record is dated 25 Sep 2026.
- Known vulnerabilities
- 5
- Active installs
- 9,000+
- Latest version
- 4.7.43
- Last updated
- 18 Sep 2026
- Most recent
- 25 Sep 2026
Find it in your WordPress dashboard under Plugins. Severity is based on the CVSS score published with the CVE where one is available.
| Vulnerability | Severity | Affected | Fix | Published |
|---|---|---|---|---|
| Cross-site scripting (XSS) CVE-2026-17577 | Medium 6.1 | Up to 4.7.42 | Fixed in a later version (latest 4.7.43) | 12 d ago |
| Path traversal CVE-2026-17602 | Medium 4.9 | Up to 4.7.42 | Fixed in a later version (latest 4.7.43) | 12 d ago |
| Cross-site scripting (XSS) CVE-2026-15463 | Medium 6.1 | Up to 4.7.42 | Fixed in a later version (latest 4.7.43) | 19 Sep 2026 |
| Authentication bypass CVE-2026-86781 | Medium 5.3 | Before 4.7.40 | Fixed in 4.7.40 | 11 Sep 2026 |
| Authentication bypass CVE-2024-1076 | Medium 6.5 | Before 4.6.0 | Fixed in 4.6.0 | 8 May 2024 |
Read the published descriptions
- CVE-2026-17577, 25 Sep 2026
- The SSL Zen plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'uri' (and 'host') parameters in versions up to, and including, 4.7.42. The ssl_zen_messages::getMessages() function builds the 'token_missmatch' message using base64_decode(sanitize_text_field($_REQUEST['uri'])) and (optionally) base64_decode(sanitize_text_field($_REQUEST['host'])). sanitize_text_field() cannot strip HTML/JavaScript that is hidden inside a base64-encoded blob, and the resulting decoded raw HTML is echoed unescaped by showMessage() . 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 specially crafted link. CVE record
- CVE-2026-17602, 25 Sep 2026
- The SSL Zen - SSL Certificate Installer & HTTPS Redirects plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 4.7.42 via the 'file_name' parameter parameter. This makes it possible for authenticated attackers, with administrator-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information. CVE record
- CVE-2026-15463, 19 Sep 2026
- 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. CVE record
- CVE-2026-86781, 11 Sep 2026
- The SSL Zen - SSL Certificate Installer & HTTPS Redirects WordPress plugin before 4.7.40 does not perform capability or nonce checks on a certificate-file download routine that runs early in the WordPress admin request lifecycle, allowing any authenticated user, including Subscribers, to download the site's TLS private key, certificates, and diagnostic logs. CVE record
- CVE-2024-1076, 8 May 2024
- The SSL Zen WordPress plugin before 4.6.0 does not properly prevent directory listing of the private keys folder, as it only relies on the use of .htaccess to prevent visitors from accessing the site's generated private keys, which allows an attacker to read them if the site runs on a server who doesn't support .htaccess files, like NGINX. CVE record
What to do if you run SSL Zen
If you run SSL Zen, open WordPress and check the installed version in Plugins. Compare it with the affected versions in the vulnerability record. If a fixed version is available, take a current backup and update to that version or the latest supported release.
If no fixed version exists, consider disabling and removing the plugin or replacing it with a maintained alternative. After dealing with the affected software, check administrator users, unexpected file changes, redirects, unfamiliar pages and security logs for signs that the site may already have been altered.
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