---
id: CVE-2026-16502
title: >-
  The Live Composer – Free WordPress Website Builder plugin for WordPress is
  vulnerable to PHP Object Injection in all versions up to, and including,
  2.1.18 via deserialization of untrusted input 
summary: >-
  The Live Composer – Free WordPress Website Builder plugin for WordPress is
  vulnerable to PHP Object Injection in all versions up to, and including,
  2.1.18 via deserialization of untrusted input . This makes it possible for
  authenticated …
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
vendor: livecomposer
product: Live Composer – Free WordPress Website Builder
affected:
  - live_composer_free_wordpress_website_builder <= 2.1.18
published: '2026-09-08'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T17:17:33.050'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-16502'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.10/modules/downloads/module.php#L4972
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.10/modules/downloads/module.php#L4975
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.10/modules/downloads/module.php#L5685
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.16/modules/downloads/module.php#L4972
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.16/modules/downloads/module.php#L4975
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.16/modules/downloads/module.php#L5685
    label: security@wordfence.com
  - url: 'https://plugins.trac.wordpress.org/changeset/3628023/'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/1db28477-8982-4e47-b5ed-26fd211ee925?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-08T14:48:54.252387Z'
ingestedAt: '2026-09-08T17:06:31.934Z'
epss: 0.00454
epssPercentile: 0.36826
---

## Overview

The Live Composer – Free WordPress Website Builder plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.1.18 via deserialization of untrusted input . This makes it possible for authenticated attackers, with contributor-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.