CVE-2026-56037 HIGH

CVE-2026-56037: WordPress Themify Popup plugin <= 1.4.3 - PHP Object Injection vulnerability

Vendor Themify
Product Themify Popup
Weakness CWE-502 · Unsafe deserialization
Published July 2, 2026
Last update July 2, 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

Deserialization of Untrusted Data vulnerability in Themify Themify Popup allows Object Injection. This issue affects Themify Popup: from n/a through 1.4.3.

Explanation of Vulnerability in Simple Terms

02Summary

Themify Popup versions up to 1.4.3 contain a deserialization vulnerability that allows authenticated attackers to execute arbitrary PHP code on the site. The vulnerability exists because the plugin deserializes untrusted data without proper validation. An attacker with low-level site access can exploit this to gain full control of the WordPress installation.

What an attacker can do

03Attacker Capabilities

Run arbitrary PHP code on the site and take full control of it.

Potential impact on your site

04Site Impact

Complete site compromise: data theft, malware injection, defacement, or total loss of availability.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege account (e.g., subscriber or contributor role) on the site.

Key dates

06Disclosure timeline

July 2, 2026 CVE published
July 2, 2026 Record updated