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

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-01-07 · updated 2026-06-17
Weakness: CWE-862

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.

Affected products

codeclouds Unify: through 3.4.9

References

https://plugins.trac.wordpress.org/browser/unify/tags/3.4.9/Services/Hooks.php#L154
https://plugins.trac.wordpress.org/changeset/3447706/
https://www.wordfence.com/threat-intel/vulnerabilities/id/b5fd4a47-0549-4d03-b81a-ad97d3d5d390?source=cve

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