bplugins Info Cards Plugin up to 2.0.7 on WordPress URL Protocol render.php esc_attr btnUrl cross site scripting

Summaryinfo

A vulnerability categorized as problematic has been discovered in bplugins Info Cards Plugin up to 2.0.7 on WordPress. This issue affects the function esc_attr of the file render.php of the component URL Protocol. Such manipulation of the argument btnUrl leads to cross site scripting. This vulnerability is traded as CVE-2026-4120. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in bplugins Info Cards Plugin up to 2.0.7 on WordPress. It has been rated as problematic. Affected by this issue is the function esc_attr of the file render.php of the component URL Protocol. The manipulation of the argument btnUrl 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 Info Cards – Add Text and Media in Card Layouts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'btnUrl' parameter within the Info Cards block in all versions up to, and including, 2.0.7. This is due to insufficient input validation on URL schemes, specifically the lack of javascript: protocol filtering. The block's render.php passes all attributes as JSON to the frontend via a data-attributes HTML attribute using esc_attr(wp_json_encode()), which prevents HTML attribute injection but does not validate URL protocols within the JSON data. The client-side view.js then renders the btnUrl value directly as an href attribute on anchor elements without any protocol sanitization. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject javascript: URLs that execute arbitrary web scripts when a user clicks the rendered button link.

The weakness was shared by Itthidej Aramsri. The advisory is available at wordfence.com. This vulnerability is handled as CVE-2026-4120 since 03/13/2026. The exploitation is known to be easy. The attack may be launched remotely. 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.

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

Upgrading to version 2.0.7 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-13072). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• bplugins

Name

• Info Cards Plugin

Version

• 2.0.0
• 2.0.1
• 2.0.2
• 2.0.3
• 2.0.4
• 2.0.5
• 2.0.6
• 2.0.7

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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