Page Builder by SiteOrigin <= 2.34.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via panels_data Parameter
| CVE | CVE-2026-13295 |
|---|---|
| CVSS | 6.4 (Medium) |
| Publicly Published | June 26, 2026 |
| Last Updated | June 27, 2026 |
| Researcher |
lhking
|
Description
The Page Builder by SiteOrigin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via panels_data Parameter in all versions up to, and including, 2.34.3 due to insufficient input sanitization and output escaping. 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. This is possible because the nonce and edit_post capability checks enforced during save are both satisfied by Contributor-level users for their own posts, and the panels_data value is stored as post meta — outside the scope of WordPress's unfiltered_html carve-out — meaning no wp_kses fallback prevents the unsanitized WP_Widget_Custom_HTML content from being persisted and later rendered verbatim on the frontend.
Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for Page Builder by SiteOrigin
| Software Type | Plugin |
|---|---|
| Software Slug | siteorigin-panels (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 2.34.4, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Page Builder by SiteOrigin
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