Reported vulnerability

Livemesh Addons for Beaver Builder <= 3.9.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Missing Authorization

Q: Which versions of Livemesh Addons for Beaver Builder are affected?

Wordfence lists these affected versions: Start version unspecified, through 3.9.2. Use the version checker above to compare your installed release with this report.

Q: Is a fix available for Livemesh Addons for Beaver Builder?

Wordfence does not report a fix for this issue in Livemesh Addons for Beaver Builder. Read the source report and ask the developer or your website support team what action to take.

Q: Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Published 26 May 2026

Updated 27 May 2026

CVE-2026-3897

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.

Wordfence advisory

medium · CVSS 6.4

The Livemesh Addons for Beaver Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `labb_admin_ajax` AJAX action in all versions up to, and including, 3.9.2 due to missing authorization checks and insufficient input sanitization. The AJAX handler verifies a nonce but does not check user capabilities. This makes it possible for authenticated attackers with Subscriber-level access and above to modify plugin settings and inject malicious scripts that execute when administrators access the plugin settings page or when any user visits the frontend.

Severity vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Livemesh Addons for Beaver Builder

Software: plugin · addons-for-beaver-builder
Affected versions: Start version unspecified, through 3.9.2
Fix availability: No fix reported
Fixed versions: No fixed version specified

Recommended action

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

Further references (1)

wordfence.com/threat-intel/vulnerabilities/id/8bc41c61-1d8a-445f-bd70-3b14a40c89d4?source=api-prod

Data sources and licences

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

Read licence terms

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Read licence terms

Source: Wordfence

Need help fixing this issue?

Get help checking your site, applying an available update and resolving any problems after updating.

Get help with this issue

Questions about this vulnerability

Which versions of Livemesh Addons for Beaver Builder are affected?

Wordfence lists these affected versions: Start version unspecified, through 3.9.2. Use the version checker above to compare your installed release with this report.

Is a fix available for Livemesh Addons for Beaver Builder?

Wordfence does not report a fix for this issue in Livemesh Addons for Beaver Builder. Read the source report and ask the developer or your website support team what action to take.

Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

Back to vulnerability database