EmailKit <= 1.6.5 - Authenticated (Author+) Arbitrary File Read via 'emailkit-editor-template' REST Parameter
| CVE | CVE-2026-5957 |
|---|---|
| CVSS | 6.5 (Medium) |
| Publicly Published | May 4, 2026 |
| Last Updated | May 5, 2026 |
| Researcher |
Nguyen Cong Quang
|
Description
The EmailKit plugin for WordPress is vulnerable to Arbitrary File Read in all versions up to and including 1.6.5. This is due to a flawed path traversal validation in the create_template() method of the CheckForm class, where realpath() is called on the allowed base directory (wp-content/uploads/emailkit/templates/) which may not exist, causing it to return false. In PHP 8.x, strpos($real_path, false) implicitly converts false to an empty string, and strpos() with an empty needle always returns 0, causing the check strpos(...) !== 0 to evaluate to false and bypassing the path validation entirely. This makes it possible for authenticated attackers, with Author-level access and above, to read arbitrary files from the server, including sensitive files such as wp-config.php, by supplying an absolute path to the emailkit-editor-template REST API parameter.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for EmailKit – Email Customizer for WooCommerce & WP
| Software Type | Plugin |
|---|---|
| Software Slug | emailkit (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 1.6.6, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in EmailKit – Email Customizer for WooCommerce & WP
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