demonisblack Scoreboard for HTML5 Games Lite Plugin up to 1.2 on WordPress Shortcode sfhg_shortcode cross site scripting

Summaryinfo

A vulnerability classified as problematic has been found in demonisblack Scoreboard for HTML5 Games Lite Plugin up to 1.2 on WordPress. This impacts the function sfhg_shortcode of the component Shortcode Handler. The manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-4083. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in demonisblack Scoreboard for HTML5 Games Lite Plugin up to 1.2 on WordPress. It has been rated as problematic. This issue affects the function sfhg_shortcode of the component Shortcode Handler. 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 Scoreboard for HTML5 Games Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'scoreboard' shortcode in all versions up to, and including, 1.2. The shortcode function sfhg_shortcode() allows arbitrary HTML attributes to be added to the rendered <iframe> element, with only a small blacklist of four attribute names (same_height_as, onload, onpageshow, onclick) being blocked. While the attribute names are passed through esc_html() and values through esc_attr(), this does not prevent injection of JavaScript event handler attributes like onfocus, onmouseover, onmouseenter, etc., because these attribute names and simple JavaScript payloads contain no characters that would be modified by these escaping functions. The shortcode text is stored in post_content and is only expanded to HTML at render time, after WordPress's kses filtering has already been applied to the raw post content. 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 published by Muhammad Yudha. It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-4083 since 03/12/2026. The exploitation is known to be easy. The attack may be initiated remotely. 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.

Upgrading to version 1.2 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Vendor

• demonisblack

Name

• Scoreboard for HTML5 Games Lite Plugin

Version

• 1.0
• 1.1
• 1.2

CPE 2.3info

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CPE 2.2info

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