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OpenAdvisories
Medium · 4.3 CVE-2025-12027 EUVD-2025-207893GHSA-424x-j3vx-fpm5

Mesmerize Companion <= 1.6.158 - Missing Authorization Authenticated (Subscriber+) Settings Update

Published Feb 19, 2026 · Updated Apr 8, 2026 · Assigned by Wordfence

Description

The Mesmerize Companion plugin for WordPress is vulnerable to unauthorized access and modification of data due to a missing capability check on the "openPageInCustomizer" and "openPageInDefaultEditor" functions in all versions up to, and including, 1.6.158. This makes it possible for authenticated attackers - with subscriber level access and above, on websites with the Mesmerize theme activated - to mark arbitrary pages as maintainable, wrap their content in custom sections, change page template metadata, and toggle the default editor flag without proper authorization.

Affected products

VendorProductAffectedFixed
horearadu Mesmerize Companion ≤ 1.6.158 —

References