CVE-2025-8427 Cross-site scripting in Beaver Builder Plugin (Starter Version)

Medium 6.4 Published 23 Oct 2025 Updated 8 Apr 2026

Authenticated attackers can inject arbitrary scripts via the auto_play parameter, executing code in victim browsers.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-8427?

CVE-2025-8427 is a medium-severity cross-site scripting vulnerability in The Beaver Builder Team Beaver Builder Plugin (Starter Version), published on 23 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-79

Which versions are affected by CVE-2025-8427?

It affects 1 product.

Products include Fastlinemedia Beaver Builder.

How do I fix CVE-2025-8427?

No fix has been published for CVE-2025-8427 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-8427 being exploited?

There is no known exploitation of CVE-2025-8427 in the wild and no public exploit code.

Sources

Also known as GHSA-rmj9-74gc-9wvx.