jhdscript ZeM STL Plugin up to 1.0 on WordPress Shortcode esc_attr url/color/bgcolor cross site scripting

Summaryinfo

A vulnerability was found in jhdscript ZeM STL Plugin up to 1.0 on WordPress. It has been declared as problematic. This vulnerability affects the function esc_attr of the component Shortcode Handler. Such manipulation of the argument url/color/bgcolor leads to cross site scripting. This vulnerability is listed as CVE-2026-4081. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in jhdscript ZeM STL Plugin up to 1.0 on WordPress and classified as problematic. Affected by this issue is the function esc_attr of the component Shortcode Handler. The manipulation of the argument url/color/bgcolor 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 ZeM STL plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the [zemstl] shortcode in all versions up to and including 1.0. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes, specifically the 'url', 'color', and 'bgcolor' parameters. These attribute values are directly interpolated into HTML attribute context without being passed through esc_attr() or any other escaping function. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The weakness was presented by Gilang Asra Bilhadi. The advisory is available at wordfence.com. This vulnerability is handled as CVE-2026-4081 since 03/12/2026. 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.

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

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

Productinfo

Type

• WordPress Plugin

Vendor

• jhdscript

Name

• ZeM STL Plugin

Version

• 1.0

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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