brthumar1959 Product Filter Widget for Elementor Plugin up to 1.0.6 on WordPress admin-ajax.php cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, has been found in brthumar1959 Product Filter Widget for Elementor Plugin up to 1.0.6 on WordPress. The affected element is an unknown function of the file admin-ajax.php. The manipulation leads to cross site scripting. This vulnerability is traded as CVE-2026-11603. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in brthumar1959 Product Filter Widget for Elementor Plugin up to 1.0.6 on WordPress and classified as problematic. This issue affects an unknown functionality of the file admin-ajax.php. The manipulation 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. The summary by CVE is:

The Product Filter Widget for Elementor plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 'args[filterFormArray]' Parameter in all versions up to, and including, 1.0.6 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 endpoint is registered via wp_ajax_nopriv_ with no nonce verification or capability check, and exploitation is delivered via a CSRF-style form auto-submission to the admin-ajax.php endpoint, requiring the attacker to trick a victim into visiting an attacker-controlled page.

The weakness was shared by Jongwook Gong. It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-11603 since 06/08/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

By approaching the search of inurl:admin-ajax.php it is possible to find vulnerable targets with Google Hacking.

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• brthumar1959

Name

• Product Filter Widget for Elementor Plugin

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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