Vulnerability in Live Composer – Free WordPress Website Builder — CVE-2026-16788

What to do now

Update Live Composer – Free WordPress Website Builder to 2.1.20 or later.

Affected versions

• Everything up to and including 2.1.19

The Live Composer – Free WordPress Website Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via dslc_module_projects_output Shortcode in all versions up to, and including, 2.1.19 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. WordPress's shortcode-aware kses handling preserves the serialized shortcode body as a placeholder before content filtering runs, allowing attacker-controlled values such as view_all_link, main_heading_link_title, main_filter_title_all, and button_text to reach render-time sinks entirely unescaped.

This description is reproduced verbatim from the public vulnerability record.

• https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.18/modules/projects/module.php#L6025
• https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.18/modules/projects/module.php#L6278
• https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.18/modules/projects/module.php#L6312
• https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.18/modules/projects/module.php#L6563
• https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.18/modules/projects/module.php#L6743
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3662813%40live-composer-page-builder&new=3662813%40live-composer-page-builder

This page is compiled automatically from public databases. Accuracy is not guaranteed; confirm against the vendor advisory before acting.