CVE-2026-39474 HIGH

CVE-2026-39474: WordPress Post Duplicator plugin <= 3.0.10 - PHP Object Injection vulnerability

Vendor Metaphorcreations
Product Post Duplicator
Weakness CWE-502 · Unsafe deserialization
Published June 15, 2026
Last update June 15, 2026
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

Contributor PHP Object Injection in Post Duplicator <= 3.0.10 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Post Duplicator versions up to 3.0.10 contain a deserialization vulnerability that allows authenticated users to execute arbitrary PHP code on the site. An attacker with low-level access can craft malicious serialized data to trigger code execution with full site privileges. This affects confidentiality, integrity, and availability of the WordPress installation.

What an attacker can do

03Attacker Capabilities

Run arbitrary PHP code on the site with full WordPress privileges.

Potential impact on your site

04Site Impact

A compromised low-privilege user account can lead to complete site takeover, data theft, or malware injection.

Conditions required to exploit

05Prerequisites

Attacker must have a low-level user account (subscriber or above) on the WordPress site.

Key dates

06Disclosure timeline

June 15, 2026 CVE published

Related vulnerabilities

08Related CVE

CVE-2026-39555 WordPress Askka theme <= 1.3.1 - PHP Object Injection vulnerability CVE-2026-27333 WordPress Paid Videochat Turnkey Site plugin <= 7.3.23 - Deserialization of untrusted data vulnerability CVE-2026-39498 WordPress YayMail plugin <= 4.3.3 - PHP Object Injection vulnerability CVE-2026-7566 LearnPress – Backup & Migration Tool <= 4.1.4 - Authenticated (Administrator+) PHP Object Injection via WXR XML File Upload CVE-2026-3017 Smart Post Show – Post Grid, Post Carousel & Slider, and List Category Posts <= 3.0.12 - Authenticated (Administrator+) PHP Object Injection