---
id: CVE-2026-105436
title: >-
  Deserialization of Untrusted Data vulnerability in MainWP MainWP Child
  mainwp-child allows Object Injection.This issue affects MainWP Child: from n/a
  through 6.2.1.
summary: >-
  Deserialization of Untrusted Data vulnerability in MainWP MainWP Child
  mainwp-child allows Object Injection.This issue affects MainWP Child: from n/a
  through 6.2.1.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
vendor: MainWP
product: mainwp-child
affected:
  - mainwp-child <= 6.2.1
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T17:24:11.230'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105436'
references:
  - url: >-
      https://patchstack.com/database/wordpress/plugin/mainwp-child/vulnerability/wordpress-mainwp-child-plugin-6-2-1-deserialization-of-untrusted-data-vulnerability?_s_id=cve
    label: audit@patchstack.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-08T17:56:11.712Z'
---

## Overview

Deserialization of Untrusted Data vulnerability in MainWP MainWP Child mainwp-child allows Object Injection.This issue affects MainWP Child: from n/a through 6.2.1.

## Remediation

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