The Elementor Website Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the _elementor_data meta field in versions up to, and including, 4.0.4. This is due to insufficient input sanitization when processing form-encoded REST API requests. The plugin registers the _elementor_data meta field with show_in_rest but omits a sanitize_callback, relying instead on a rest_pre_insert_post filter (sanitize_post_data function) that only sanitizes JSON-encoded request bodies. When a contributor sends a form-encoded PATCH request to the WordPress REST API, the json_decode() call on the raw body returns null, causing all sanitization to be skipped. The unsanitized data is then stored via update_post_meta() and later output without escaping through multiple widget sinks including the HTML widget's print_unescaped_setting() function. 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.
CVE-2026-6127 is a medium severity with CVSS 6.4 Stored Cross-Site Scripting issue affecting the Plugin Elementor Website Builder – more than just a page builder. It affects Versions up to 4.0.4 and is fixed in 4.0.5.
CVE-2026-6127 is tracked for the Plugin Elementor Website Builder – more than just a page builder as medium severity with CVSS 6.4. The affected range is Versions up to 4.0.4. Update Elementor Website Builder – more than just a page builder to 4.0.5 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
elementor
View on wordpress.org
|
| CVE | CVE-2026-6127 |
| Patched Versions |
4.0.5
|
| Affected Versions |
Versions up to 4.0.4
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Elementor <= 3.19.0 - Authenticated(Contributor+) Arbitrary File Deletion and PHAR Deserialization
Elementor <= 3.18.1 - Authenticated(Contributor+) Arbitrary File Upload to Remote Code Execution via Template Import
Elementor Website Builder 3.6.0 - 3.6.2 - Missing Authorization to Remote Code Execution
Elementor Website Builder <= 2.7.4 - Arbitrary File Upload
Elementor Website Builder <= 1.7.12 - Missing Authorization
Elementor Website Builder <= 2.8.3 - Cross-Site Scripting
Elementor <= 3.12.1 - Authenticated(Administrator+) SQL Injection via 'replace_urls'
Elementor Website Builder <= 3.16.4 - Missing Authorization to Arbitrary Attachment Read
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