WPBakery Page Builder <= 8.6.1 - Stored Cross-Site Scripting via vc_custom_heading Shortcode

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CVE CVE-2025-11161
CVSS Medium (6.4)
Publicly Published October 14, 2025
Last Updated October 15, 2025
Researcher Muhammad Yudha - DJ
Description

The WPBakery Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the vc_custom_heading shortcode in all versions up to, and including, 8.6.1. This is due to insufficient restriction of allowed HTML tags and improper sanitization of user-supplied attributes in the font_container parameter. This makes it possible for authenticated attackers with contributor-level access or higher to inject arbitrary web scripts in posts that will execute whenever a user accesses an injected page via the vc_custom_heading shortcode with malicious tag and text attributes granted they have access to use WPBakery shortcodes.

References

1 affected software package

Software Type Plugin
Software Slug js_composer (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 8.6.1
Patched Version
  • 8.7
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