Is CVE-2026-18021 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-18021?

CVE-2026-18021 has a CVSS v3 severity of MEDIUM (6.5).

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CVE-2026-18021

Description

The The Beaver Builder Page Builder – Drag and Drop Website Builder plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 2.10.3.1. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.