CVE-2026-2481: Beaver Builder Page Builder XSS Vulnerability

CVE-2026-2481 Overview

CVE-2026-2481 is a Stored Cross-Site Scripting (XSS) vulnerability [CWE-79] in the Beaver Builder Page Builder – Drag and Drop Website Builder plugin for WordPress. The flaw affects all versions up to and including 2.10.1.1. The vulnerability resides in the settings[js] parameter, which suffers from insufficient input sanitization and output escaping. Authenticated attackers with author-level access or higher can inject arbitrary JavaScript into pages. The injected scripts execute in the browser of any visitor who accesses the affected page. This enables session hijacking, credential theft, and unauthorized actions performed in the context of victim users.

Critical Impact
Authenticated authors can persist JavaScript payloads in WordPress pages, executing in visitor browsers and potentially compromising administrator accounts.

Affected Products

Beaver Builder Page Builder – Drag and Drop Website Builder plugin for WordPress
All versions up to and including 2.10.1.1
WordPress sites with author-level or higher user accounts enabled

Discovery Timeline

2026-04-08 - CVE-2026-2481 published to NVD
2026-04-24 - Last updated in NVD database

Technical Details for CVE-2026-2481

Vulnerability Analysis

The vulnerability is a stored XSS issue affecting the Beaver Builder page builder plugin. The plugin accepts user-supplied content through the settings[js] parameter, which is intended to allow custom JavaScript configuration for page modules. The plugin fails to apply sufficient sanitization to inbound data and does not properly escape output when the stored value is rendered to visitors. Because the payload is persisted in the database, every subsequent visitor to the affected page triggers script execution. The attack requires author-level privileges or higher, which limits exploitation to authenticated users with content creation rights. WordPress installations that allow user registration with elevated roles, or sites with multiple content contributors, face the greatest exposure.

Root Cause

The root cause is improper neutralization of input during web page generation [CWE-79]. The settings[js] parameter accepts script content but does not enforce a strict sanitization policy. Output rendering also lacks contextual escaping, allowing raw JavaScript to be emitted into the page DOM.

Attack Vector

An attacker authenticates to the target WordPress site using an account with at least author-level privileges. The attacker creates or edits a page using Beaver Builder and injects a malicious JavaScript payload into a module that populates the settings[js] field. Once saved, the payload is persisted and executes whenever any user, including administrators, views the affected page. The scope-changed nature of the vulnerability means the injected script can interact with resources beyond the original component, including reading session cookies, performing administrative actions, or pivoting to further account compromise.

No verified proof-of-concept code is publicly available. See the Wordfence Vulnerability Advisory for additional technical details.

Detection Methods for CVE-2026-2481

Indicators of Compromise

Unexpected <script> tags or JavaScript event handlers stored in Beaver Builder module settings or post meta tables.
Outbound HTTP requests from visitor browsers to attacker-controlled domains after viewing affected pages.
Unauthorized administrator account creation or privilege changes following author-level content modifications.
Suspicious entries in the wp_postmeta table containing encoded or obfuscated JavaScript within Beaver Builder configuration data.

Detection Strategies

Audit WordPress database tables for Beaver Builder module configurations containing <script>, javascript:, or event handler attributes such as onerror and onload.
Review WordPress activity logs for page edits performed by author-level accounts, correlating with anomalous browser behavior reported by site visitors.
Deploy a Content Security Policy (CSP) in report-only mode to detect inline script execution originating from page content.

Monitoring Recommendations

Monitor user role changes and new account creation events in the WordPress admin panel.
Track HTTP responses serving pages built with Beaver Builder for unexpected script tags or external resource references.
Alert on author-level or contributor-level accounts editing high-traffic pages outside normal business hours.

How to Mitigate CVE-2026-2481

Immediate Actions Required

Update the Beaver Builder Page Builder plugin to a version newer than 2.10.1.1 as soon as a patched release is available.
Audit all existing pages created or modified by author-level accounts for malicious JavaScript content.
Review and reduce the number of users assigned author-level or higher roles to the minimum required.
Force password resets for all author-level and administrator accounts if compromise is suspected.

Patch Information

Review the Beaver Builder Change Logs for the patched release addressing this vulnerability. Apply the update across all WordPress installations using the plugin.

Workarounds

Restrict author-level access to trusted users only and disable open user registration with elevated roles.
Deploy a web application firewall (WAF) with rules that block script injection patterns in WordPress POST requests targeting Beaver Builder endpoints.
Implement a strict Content Security Policy that disallows inline JavaScript execution on pages served by WordPress.
Use the WordPress DISALLOW_UNFILTERED_HTML constant to prevent lower-privileged users from saving raw HTML content.

bash

# Configuration example: enforce unfiltered HTML restriction in wp-config.php
define( 'DISALLOW_UNFILTERED_HTML', true );