Is CVE-2026-4083 actively exploited?

No active exploitation of CVE-2026-4083 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4083 be exploited remotely?

Yes. CVE-2026-4083 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4083?

CVE-2026-4083 has a CVSS score of 6.4 (MEDIUM).

HOME VULNERABILITIESCVE-2026-4083

MEDIUM

CVE-2026-4083

CWE-79Published: March 21, 2026· Updated: Mar 23, 2026

6.4

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.6th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-4083 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.