CVE-2025-8427: Fastlinemedia Beaver Builder

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

The Beaver Builder Plugin (Starter Version) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘auto_play’ parameter in all versions up to, and including, 2.9.2.1 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.

Affected products

• Fastlinemedia Beaver Builder: before 2.9.3.1 (fixed in 2.9.3.1)

Published 2025-10-23. Last modified 2026-10-08.