CVE-2025-12027 Mesmerize Companion <= 1.6.158 - Missing Authorization Authenticated (Subscriber+) Settings Update
Authenticated subscribers can modify arbitrary page settings and metadata in the Mesmerize Companion WordPress plugin due to missing capability checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-12027?
CVE-2025-12027 is a medium-severity missing authorization vulnerability in horearadu Mesmerize Companion, published on 19 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2025-12027?
How do I fix CVE-2025-12027?
No fix has been published for CVE-2025-12027 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-12027 being exploited?
There is no known exploitation of CVE-2025-12027 in the wild and no public exploit code.
Sources
Also known as GHSA-424x-j3vx-fpm5.