---
id: CVE-2026-97283
title: >-
  Deserialization of Untrusted Data vulnerability in Liquid Web / StellarWP
  Advanced Post Manager advanced-post-manager allows Object Injection.This issue
  affects Advanced Post Manager: from n/a through 4.5.5.
summary: >-
  Deserialization of Untrusted Data vulnerability in Liquid Web / StellarWP
  Advanced Post Manager advanced-post-manager allows Object Injection.This issue
  affects Advanced Post Manager: from n/a through 4.5.5.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
vendor: Liquid Web / StellarWP
product: advanced-post-manager
affected:
  - advanced-post-manager <= 4.5.5
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T19:17:27.133'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97283'
references:
  - url: >-
      https://patchstack.com/database/wordpress/plugin/advanced-post-manager/vulnerability/wordpress-advanced-post-manager-plugin-4-5-5-php-object-injection-vulnerability?_s_id=cve
    label: audit@patchstack.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-10-05T18:46:30.456481Z'
ingestedAt: '2026-10-05T18:29:11.212Z'
---

## Overview

Deserialization of Untrusted Data vulnerability in Liquid Web / StellarWP Advanced Post Manager advanced-post-manager allows Object Injection.This issue affects Advanced Post Manager: from n/a through 4.5.5.

## Remediation

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