# The Plus Addons for Elementor <= 6.5.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Syntax Highlighter and Page Scroll Widgets

- **ID:** WPSEC-2026-1799
- **Plugin:** The Plus Addons for Elementor – Mega Menu, Header Footer, Post Grid, AI Widgets & Templates (`the-plus-addons-for-elementor-page-builder`), https://wordpress.org/plugins/the-plus-addons-for-elementor-page-builder/
- **Affected versions:** all versions before 6.6.0
- **Fixed in:** 6.6.0 (Update to 6.6.0 or later.)
- **Severity:** Medium 6.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Medium, affected versions Medium (as of 2026-10-28)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/the-plus-addons-for-elementor-page-builder
- **Fix released:** 2026-10-27
- **Published:** 2026-10-28
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1799/

## Description

The The Plus Addons for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Syntax Highlighter widget's copy and copied button labels and the Page Scroll widget's navigation dot tooltips and section anchors in all versions up to, and including, 6.5.3, due to insufficient input sanitization and output escaping. The shared sanitizer removed only hexadecimal entities, so encoded markup passed it, and esc_html()/esc_attr() do not double-encode existing entities, so the browser decoded the data attributes back into markup, which the frontend scripts then inserted as HTML. 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.

## References

- https://wpsec.com/vuln/WPSEC-2026-1799/
- https://plugins.svn.wordpress.org/the-plus-addons-for-elementor-page-builder/tags/6.6.0/
- https://wordpress.org/plugins/the-plus-addons-for-elementor-page-builder/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1799/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.