CVE-2025-8897

Beaver Builder Plugin (Lite Version) <= 2.9.2.1 - Reflected Cross-Site Scripting

2025-08-27 00:00
AlexHenry

Strategic Overview

Status
Patched in 2.9.3.1
Affected Plugin
Beaver Builder Page Builder – Drag and Drop Website Builder
Affected Version
<= 2.9.2.1
CVSS
6.1Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2025-8897
View all Beaver Builder Page Builder – Drag and Drop Website Builder vulnerabilities

At a glance

CVE-2025-8897 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Beaver Builder Page Builder WordPress plugin, affecting versions <= 2.9.2.1. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.9.3.1; sites on affected versions should update now. Disclosed August 2025, reported by AlexHenry.

Vulnerability Overview

The Beaver Builder – WordPress Page Builder plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘'fl_builder' 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 unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Beaver Builder Page Builder <= 2.9.2.1 carries this weakness at fl_builder, and reaching it takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Beaver Builder Page Builder the fix is 2.9.3.1: builds <= 2.9.2.1 are affected, anything from 2.9.3.1 onward is not.

Remediation

Update to version 2.9.3.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Beaver Builder Page Builder: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Beaver Builder Page Builder 2.9.3.1 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-8897https://www.wordfence.com/threat-intel/vulnerabilities/id/93504959-2154-4b8c-a7d1-c982bdc8d034https://nvd.nist.gov/vuln/detail/CVE-2025-8897

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C