Livemesh Addons for Beaver Builder <= 3.9.2 — Authenticated (Subscriber+) Stored Cross-Site Scripting via Missing Authorization
CVE-2026-3897Published · Updated Action summary
Affected: ≤3.9.2No patch available
What to do until a fix ships- Severity
- Medium6.4
- CVSS
- 6.4CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:CScope- Changed
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-862 Missing Authorization
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Livemesh Addons for Beaver Builder addons-for-beaver-builder
- Affected≤ 3.9.2
- PatchedNo fix yet
No patched version available.
You are affected if you run ≤ 3.9.2. No fixed version has been released.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Livemesh Addons for Beaver Builder.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- 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.
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Livemesh Addons for Beaver Builder to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Muhammad Yudha - DJ.
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Livemesh Addons for Beaver Builder
All 5| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting via 'title' and 'value' Shortcode Attributes ≤3.9.2No patch available | CVE-2026-2029 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤3.9.2No patch available | CVE-2025-62990 | |
| Medium4.4 | Authenticated (Editor+) Stored Cross-Site Scripting ≤3.6.1Update to 3.7 | CVE-2024-38784 | |
| Medium6.3 | Missing Authorization Checks all versionsNo patch available | CVE-2022-4974 |
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via 'title' and 'value' Shortcode Attributes
≤3.9.2No patch available
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤3.9.2No patch available
- Medium4.4Authenticated (Editor+) Stored Cross-Site Scripting
≤3.6.1Update to 3.7
- Medium6.3Missing Authorization Checks
all versionsNo patch available
Same weakness (Missing Authorization)
All Missing Authorization| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity medium, CVSS 6.4
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.