CVE-2025-13529 MEDIUM

CVE-2025-13529: Unify <= 3.4.9 - Missing Authorization to Unauthenticated Option Deletion via 'unify_plugin_downgrade' Parameter

Vendor Codeclouds
Product Unify
Weakness CWE-862 · Missing authorization
Published January 7, 2026
Last update April 8, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

The Unify plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'init' action in all versions up to, and including, 3.4.9. This makes it possible for unauthenticated attackers to delete specific plugin options via the 'unify_plugin_downgrade' parameter.

Explanation of Vulnerability in Simple Terms

02Summary

Codeclouds Unify versions 3.4.9 and earlier lack proper authorization checks, allowing unauthenticated attackers to modify data on the site. The vulnerability requires only network access and no user interaction. Sites running affected versions should update immediately to 3.4.10 or later.

What an attacker can do

03Attacker Capabilities

Modify data on the site without authentication.

Potential impact on your site

04Site Impact

Unauthorized users can alter site content, settings, or records without logging in.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

January 7, 2026 CVE published
April 8, 2026 Record updated