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CVE-2026-9281: Master Addons For Elementor <= 3.1.0 - Authenticated (Author+) Stored Cross-Site Scripting via 'jtlma_custom_js' Page Setting (Custom JS Extension)

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-06 · updated 2026-07-23
• Weakness: CWE-79

Description

The Master Addons For Elementor – Widgets, Extensions, Theme Builder, Popup Builder & Template Kits plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'jtlma_custom_js' Page Setting (Custom JS Extension) in all versions up to, and including, 3.1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The unfiltered_html capability check is only enforced during Elementor control registration (UI rendering) and not during the save process, enabling Author-level users to inject the jtlma_custom_js setting directly via a crafted POST request to admin-ajax.php?action=elementor_ajax, bypassing the UI-level restriction entirely.

Affected products

• litonice13 Master Addons For Elementor – Widgets, Extensions, Theme Builder, Popup Builder & Template Kits: through 3.1.0

References

• https://plugins.trac.wordpress.org/browser/master-addons/tags/3.0.2/inc/modules/utilities/custom-js/custom-js.php#L206
• https://plugins.trac.wordpress.org/browser/master-addons/tags/3.0.2/inc/modules/utilities/custom-js/custom-js.php#L214
• https://plugins.trac.wordpress.org/browser/master-addons/tags/3.0.2/inc/modules/utilities/custom-js/custom-js.php#L80
• https://plugins.trac.wordpress.org/browser/master-addons/tags/3.1.0/inc/modules/utilities/custom-js/custom-js.php#L206
• https://plugins.trac.wordpress.org/browser/master-addons/tags/3.1.0/inc/modules/utilities/custom-js/custom-js.php#L214
• https://plugins.trac.wordpress.org/browser/master-addons/tags/3.1.0/inc/modules/utilities/custom-js/custom-js.php#L80
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3556818%40master-addons&new=3556818%40master-addons&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/5b8e052a-6e60-4455-96c9-b2a3e86773da?source=cve

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