CVE-2026-3895Network attack vector

Subscriber-level stored XSS via unchecked AJAX settings

Published May 27, 2026 · Updated May 27, 2026

Stored XSS in Livemesh Addons for WPBakery Page Builder 3.9.4 and earlier allows remote authenticated users to inject scripts. The lvca_admin_ajax handler accepts a valid nonce without checking capabilities, stores insufficiently sanitized settings, and renders them without safe escaping. Subscriber-level access is sufficient; the stored script executes for administrators opening plugin settings or users visiting affected frontend content.

CVSS severity6.4
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Livemesh Addons for WPBakery Page Builder 3.9.4 and earlier allows remote authenticated users to inject scripts. The lvca_admin_ajax handler accepts a valid nonce without checking capabilities, stores insufficiently sanitized settings, and renders them without safe escaping. Subscriber-level access is sufficient; the stored script executes for administrators opening plugin settings or users visiting affected frontend content.

The record

CVE
CVE-2026-3895
Published
May 27, 2026
Updated
May 27, 2026
Vendor
Livemesh Themes
Product
Livemesh Addons for WPBakery Page Builder
Classifications
CWE-862, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.9.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Livemesh Themes · Livemesh Addons for WPBakery Page Builderversion=0 <=3.9.4

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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