Vulnerabilities / Page Builder by SiteOrigin / WPSEC-2026-0433
Page Builder by SiteOrigin <= 2.36.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'panels_data' Post Meta
Medium 6.4
CWE-79Fixed in 2.37.0
- ID
- WPSEC-2026-0433
- Plugin
- Page Builder by SiteOrigin (siteorigin-panels)
- Affected
- all versions before 2.37.0
- Remediation
- Update to 2.37.0 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/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, 2026-10-05
- Attack surface
- Page Builder by SiteOrigin on WPSec AttackSurface
- Fix released
- Published
Description
The Page Builder by SiteOrigin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'panels_data' post meta in all versions up to, and including, 2.36.1 due to the meta key not being protected from direct writes through core meta routes such as the Custom Fields box or XML-RPC, which bypasses the plugin's widget sanitization. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts into page layouts that will execute whenever a user accesses an injected page.
References
- https://wpsec.com/vuln/WPSEC-2026-0433/
- https://plugins.svn.wordpress.org/siteorigin-panels/tags/2.37.0/
- https://wordpress.org/plugins/siteorigin-panels/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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