PT-2026-20576 · WordPress+1 · Mesmerize Companion+1

Rafshanzani Suhada · Published 2026-02-19 · Updated 2026-02-23 · CVE-2025-12027

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Mesmerize Companion versions up to and including 1.6.158

Description The Mesmerize Companion plugin for WordPress is susceptible to unauthorized access and modification of data. This is due to a missing capability check within the openPageInCustomizer and openPageInDefaultEditor functions. Authenticated attackers with subscriber-level access or higher, on websites utilizing the Mesmerize theme, can exploit this to perform actions such as marking pages as maintainable, altering page template metadata, and modifying the default editor flag without appropriate authorization.

Recommendations Update Mesmerize Companion to a version newer than 1.6.158.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2025-12027

Affected Products

Mesmerize Companion

Mesmerize Theme

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2025-12027 · Security Note
• https://twitter.com/CVEnew/status/2025892104686223870 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/242a3c60-b8ca-43cc-92d7-eb3830381512?source=cve · Note
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3385651%40mesmerize-companion&old=3270403%40mesmerize-companion&sfp_email=&sfph_mail= · Note
• https://t.me/CVEtracker/45046 · Telegram Post
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3385651%40mesmerize-companion&new=3385651%40mesmerize-companion&sfp_email=&sfph_mail= · Note