Vulnerability in WPBakery Page Builder Addons by Livemesh (WordPress plugin) (CVE-2026-3895)
Summary
Vulnerability in WPBakery Page Builder Addons by Livemesh (WordPress plugin) (CVE-2026-3895). Risk of unauthorized operations or information disclosure. Exploitable via lvca_admin_ajax.
Original description
The description as published by the source.
The WPBakery Page Builder Addons by Livemesh plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the lvca_admin_ajax AJAX action in all versions up to, and including, 3.9.4 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.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-3895 has been found in WPBakery Page Builder Addons by Livemesh (WordPress plugin).
Attackers can target a specific entry point like lvca_admin_ajax over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 6.4/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "WPBakery Page Builder Addons by Livemesh (WordPress plugin) CVE-2026-3895" on the vendor's site.
CVE-2026-3895 (WPBakery Page Builder Addons by Livemesh (WordPress plugin)) — CWE-862 / CVSS v3 6.4
Attack vector: remote (network-reachable) / no user interaction
Attack surface: lvca_admin_ajax
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-862) exists in WPBakery Page Builder Addons by Livemesh (WordPress plugin). Attackers reach the vulnerable code path via lvca_admin_ajax.
Check the vendor advisory for the affected versions of WPBakery Page Builder Addons by Livemesh (WordPress plugin). Attack surface: lvca_admin_ajax.
Severity: Medium (CVSS 6.4/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで WPBakery Page Builder Addons by Livemesh (WordPress plugin) を使っているサービスとバージョンを洗い出す。
-
2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- web nvd.nist.gov
- web security@wordfence.com
- web security@wordfence.com
- web security@wordfence.com
- web security@wordfence.com
- web github.com