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CVE-2025-12027

4.3 · MEDIUM

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 "openPageInDefaultEdit…

Published Feb 19, 2026CWE-862EPSS 0.31%

Overview

CVE-2025-12027 is a medium-severity vulnerability. It was published on February 19, 2026 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3385651%40mesmerize-companion&old=3270403%40mesmerize-companion&sfp_email=&sfph_mail=Refplugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3385651%40mesmerize-companion&new=3385651%40mesmerize-companion&sfp_email=&sfph_mail=Refwww.wordfence.com/threat-intel/vulnerabilities/id/242a3c60-b8ca-43cc-92d7-eb3830381512?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2025-12027?

CVE-2025-12027 is a medium-severity vulnerability. It was published on February 19, 2026 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2025-12027?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-12027?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-12027?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-12027 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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