CVE-2026-3998

Name of the Vulnerable Software and Affected Versions WM JqMath versions prior to 1.4

Description Stored Cross-Site Scripting occurs due to insufficient input sanitization and output escaping of user-supplied shortcode attributes. The generate jqMathFormula() function directly concatenates the style attribute value of the [jqmath] shortcode into an HTML style attribute without applying esc attr() or other escaping methods. This allows authenticated attackers with Contributor-level access or higher to inject arbitrary web scripts into pages, which execute when a user visits the affected page.

Recommendations Update to a version newer than 1.3. As a temporary mitigation, restrict the ability of users with Contributor-level access to use the style attribute within the [jqmath] shortcode.