CVE-2026-17090

Beaver Builder Page Builder <= 2.10.2.2 - Authenticated (Author+) Stored Cross-Site Scripting via Button Module 'button' Parameter

2026-08-14 14:57
a1batr0ss

Strategic Overview

Status
Patched in 2.10.3.2
Affected Plugin
Beaver Builder Page Builder – Drag and Drop Website Builder
Affected Version
<= 2.10.2.2
CVSS
6.4Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2026-17090
View all Beaver Builder Page Builder – Drag and Drop Website Builder vulnerabilities

At a glance

CVE-2026-17090 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 <= 2.10.2.2. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Author level or above. The issue is fixed in version 2.10.3.2; sites on affected versions should update now. Disclosed August 2026, reported by a1batr0ss.

Vulnerability Overview

The Beaver Builder Page Builder – Drag and Drop Website Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Button Module 'button' (Button Code) Setting in all versions up to, and including, 2.10.2.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Beaver Builder grants editor access to any WordPress role holding the edit_posts capability by default, meaning Author-level users and above can exploit this vulnerability.

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 interaction from a victim user.

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

Beaver Builder Page Builder <= 2.10.2.2 carries this weakness at button, and reaching it takes an account at Author level or above. 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 2.10.3.2: builds <= 2.10.2.2 are affected, anything from 2.10.3.2 onward is not.

Remediation

Update to version 2.10.3.2, or a newer patched version

How does WordSec protect against this?

An attacker needs Author access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Beaver Builder Page Builder 2.10.3.2 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-17090https://www.wordfence.com/threat-intel/vulnerabilities/id/0abbdf2c-b1f8-4431-b892-1d7972749af6https://nvd.nist.gov/vuln/detail/CVE-2026-17090

Related records

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