roxnor EmailKit Plugin up to 1.6.3 on WordPress REST API Endpoint action emailkit-editor-template path traversal

Summaryinfo

A vulnerability identified as critical has been detected in roxnor EmailKit Plugin up to 1.6.3 on WordPress. Affected by this issue is the function action of the component REST API Endpoint. Performing a manipulation of the argument emailkit-editor-template results in path traversal. This vulnerability is identified as CVE-2026-3474. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in roxnor EmailKit Plugin up to 1.6.3 on WordPress. It has been classified as problematic. This affects the function action of the component REST API Endpoint. The manipulation of the argument emailkit-editor-template with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality. The summary by CVE is:

The EmailKit – Email Customizer for WooCommerce & WP plugin for WordPress is vulnerable to arbitrary file read via path traversal in all versions up to, and including, 1.6.3. This is due to the action() function in the TemplateData class passing user-supplied input from the 'emailkit-editor-template' REST API parameter directly to file_get_contents() without any path validation, sanitization, or restriction to an allowed directory. This makes it possible for authenticated attackers, with Administrator-level access, to read arbitrary files on the server (such as /etc/passwd or wp-config.php) by supplying a traversal path. The file contents are stored as post meta and can subsequently be retrieved via the fetch-data REST API endpoint. Notably, the CheckForm class in the same plugin implements proper path validation using realpath() and directory restriction, demonstrating that the developer was aware of the risk but failed to apply the same protections to the TemplateData endpoint.

The weakness was released by Chiao-Lin Yu. The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-3474 since 03/03/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation needs additional levels of successful authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 1.6.2 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Vendor

• roxnor

Name

• EmailKit Plugin

Version

• 1.6.0
• 1.6.1
• 1.6.2
• 1.6.3

CPE 2.3info

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CPE 2.2info

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