wpmet ElementsKit Pro Plugin up to 4.10.1 on WordPress Advanced Search advanced-search update_option cross site scripting

Summaryinfo

A vulnerability labeled as problematic has been found in wpmet ElementsKit Pro Plugin up to 4.10.1. Affected by this issue is the function update_option of the file /wp-json/elementskit/v1/advanced-search of the component Advanced Search. Such manipulation of the argument s leads to cross site scripting. This vulnerability is listed as CVE-2026-4246. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in wpmet ElementsKit Pro Plugin up to 4.10.1 and classified as problematic. Affected by this issue is the function update_option of the file /wp-json/elementskit/v1/advanced-search of the component Advanced Search. The manipulation of the argument s with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

The ElementsKit Pro plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 's' parameter of the Advanced Search REST endpoint in all versions up to, and including, 4.10.1 due to insufficient input sanitization and output escaping. The REST endpoint at /wp-json/elementskit/v1/advanced-search uses permission_callback set to __return_true, allowing unauthenticated access. Search terms are stored in the ekit_advanced_search_popular_keyword WordPress option via update_option(). While sanitize_text_field() is applied, it does not encode double quotes, and the stored keywords are rendered in HTML attributes via sprintf without esc_attr(), allowing attribute injection. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user triggers the "no results" popular keywords view on pages using the Advanced Search widget.

The advisory is available at wordfence.com. This vulnerability is handled as CVE-2026-4246 since 03/16/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• wpmet

Name

• ElementsKit Pro Plugin

Version

• 4.10.0
• 4.10.1

CPE 2.3info

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• 🔒

CPE 2.2info

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