CVE-2026-9281

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.

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CVSS v3.1 Score

6.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

EPSS — Exploit Prediction

0.0021

Probability of exploitation

0.12%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

References

Other 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

Frequently Asked Questions

What is CVE-2026-9281? +

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. It has a CVSS v3.1 base score of 6.4 (MEDIUM).

How severe is CVE-2026-9281? +

CVE-2026-9281 has a CVSS v3.1 score of 6.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0021, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-9281? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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