CVE-2026-2422

Description

The WP Composer – The Easiest Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pbwp_raw_shortcode' shortcode in all versions up to, and including, 1.0.5. This is due to the shortcode handler decoding Base64-encoded content and outputting it directly without any sanitization or 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. The Base64 encoding allows the payload to bypass WordPress's KSES content filtering at save time, since the encoded string contains no harmful HTML characters.

References

• https://plugins.trac.wordpress.org/browser/page-builder-wp/tags/1.0.5/inc/global/wpc-helpers.php#L3578
• https://plugins.trac.wordpress.org/browser/page-builder-wp/trunk/inc/global/wpc-helpers.php#L3578
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3482357%40page-builder-wp&new=3482357%40page-builder-wp
• https://www.wordfence.com/threat-intel/vulnerabilities/id/7e328f1d-687d-424f-aab7-343bcece90cd?source=cve