Vulnerabilities / Elementor Website Builder / WPSEC-2026-0903
Elementor Website Builder <= 4.3.4 - Authenticated (Author+) Stored Cross-Site Scripting via SVG CDATA Sections
Medium 4.9
CWE-79Fixed in 4.3.5
- ID
- WPSEC-2026-0903
- Plugin
- Elementor Website Builder – more than just a page builder (elementor)
- Affected
- all versions before 4.3.5
- Remediation
- Update to 4.3.5 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin High · Affected versions High among sites WPSec scans, 2026-10-14
- Attack surface
- Elementor Website Builder on WPSec AttackSurface
- Fix released
- Published
Description
The Elementor Website Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via uploaded SVG files in all versions up to, and including, 4.3.4, due to the SVG sanitizer not processing CDATA sections inside allowed elements, so they are output unchanged when the SVG is inlined into a page. 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 a page where the SVG is rendered inline. Exploitation requires that Elementor's unfiltered file uploads setting be enabled.
References
- https://wpsec.com/vuln/WPSEC-2026-0903/
- https://plugins.svn.wordpress.org/elementor/tags/4.3.5/
- https://wordpress.org/plugins/elementor/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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