Unify <= 3.4.9 - Missing Authorization to Unauthenticated Option Deletion via 'unify_plugin_downgrade' Parameter

5.3
Missing Authorization
CVE CVE-2025-13529
CVSS 5.3 (Medium)
Publicly Published January 6, 2026
Last Updated February 3, 2026
Researcher Legion Hunter

Description

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.

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Vulnerability Details for Unify

Software Type Plugin
Software Slug unify (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.4.10, or a newer patched version
Affected Version
  • <= 3.4.9
Patched Version
  • 3.4.10

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