Mesmerize Companion <= 1.6.158 - Missing Authorization Authenticated (Subscriber+) Settings Update
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-12027
- 2026-10-03 Alias added: GHSA-424x-j3vx-fpm5
References
Other 3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/242a3c60-b8ca-43cc-92d7-eb3830381512?source=cve
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3385651%40mesmerize-companion&old=3270403%40mesmerize-companion&sfp_email=&sfph_mail=
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3385651%40mesmerize-companion&new=3385651%40mesmerize-companion&sfp_email=&sfph_mail=
More horearadu vulnerabilities
- TI-2024-04380 Cross-site scripting in horearadu Materialis Companion CVSS 3.1MEDIUM 6.4
- TI-2024-04376 Cross-site scripting in horearadu One Page Express Companion CVSS 3.1MEDIUM 6.4
- TI-2024-03259 Cross-site scripting in horearadu Mesmerize Companion CVSS 3.1MEDIUM 6.4
- TI-2026-19783 WordPress Materialis Companion plugin <= 1.3.52 - Broken Access Control vulnerability CVSS 3.1MEDIUM 4.3
- TI-2025-38375 WordPress One Page Express Companion plugin <= 1.6.43 - Broken Access Control vulnerability CVSS 3.1MEDIUM 4.3
Sources
- CVE-2025-12027 · CVE Program
- CVE-2025-12027 · NVD
- FIRST EPSS
- GHSA-424x-j3vx-fpm5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences