Livemesh Addons for Beaver Builder Plugin up to 3.9.2 on WordPress AJAX labb_admin_ajax authorization

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Livemesh Addons for Beaver Builder Plugin up to 3.9.2 on WordPress. Affected by this issue is the function labb_admin_ajax of the component AJAX Handler. Such manipulation leads to authorization. This vulnerability is referenced as CVE-2026-3897. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Livemesh Addons for Beaver Builder Plugin up to 3.9.2 on WordPress. Affected by this issue is the function labb_admin_ajax of the component AJAX Handler. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published by Muhammad Yudha. The advisory is shared for download at wordfence.com. This vulnerability is handled as CVE-2026-3897 since 03/10/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available.

Upgrading to version 3.9.2 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.4
CNA Vector (Wordfence): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Addons for Beaver Builder Plugin 3.9.2

Timelineinfo

03/10/2026 CVE reserved
05/27/2026 +77 days Advisory disclosed
05/27/2026 +0 days VulDB entry created
05/27/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: wordfence.com
Researcher: Muhammad Yudha
Status: Confirmed

CVE: CVE-2026-3897 (🔒)
GCVE (CVE): GCVE-0-2026-3897
GCVE (VulDB): GCVE-100-365960

Entryinfo

Created: 05/27/2026 11:36
Changes: 05/27/2026 11:36 (67)
Complete: 🔍
Cache ID: 216::103

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