CVE-2025-69099 HIGH

CVE-2025-69099: WordPress North theme <= 5.7.5 - PHP Object Injection vulnerability

Vendor Fuelthemes
Product North
Weakness CWE-502 · Unsafe deserialization
Published January 22, 2026
Last update April 28, 2026

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 fuelthemes North north-wp allows Object Injection.This issue affects North: from n/a through <= 5.7.5.

Explanation of Vulnerability in Simple Terms

02Summary

North versions up to 5.7.5 contain a deserialization vulnerability that allows authenticated users to execute arbitrary code on the site. An attacker with low-level access can craft malicious serialized data that, when processed by the application, runs their own PHP code with full site privileges. This affects confidentiality, integrity, and availability of the entire installation.

What an attacker can do

03Attacker Capabilities

Run arbitrary code on the site with full administrative privileges.

Potential impact on your site

04Site Impact

Complete compromise of the site: data theft, malware injection, user account takeover, and site defacement.

Conditions required to exploit

05Prerequisites

Attacker must have a low-level user account (e.g., subscriber or contributor role).

Key dates

06Disclosure timeline

January 22, 2026 CVE published
April 28, 2026 Record updated