CVE-2025-12027Network attack vector

Subscriber-level page modification via unchecked editor functions

Published Feb 19, 2026 · Updated Feb 19, 2026

Missing authorization in Mesmerize Companion 1.6.158 and earlier allows remote authenticated users to modify arbitrary page settings. The openPageInCustomizer and openPageInDefaultEditor functions process page-targeted requests without checking caller capabilities, then rewrite page content and template or editor metadata. Subscriber-level access is sufficient when the Mesmerize theme is active; the reported impact is limited to page content and settings modification.

CVSS severity4.3
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Mesmerize Companion 1.6.158 and earlier allows remote authenticated users to modify arbitrary page settings. The openPageInCustomizer and openPageInDefaultEditor functions process page-targeted requests without checking caller capabilities, then rewrite page content and template or editor metadata. Subscriber-level access is sufficient when the Mesmerize theme is active; the reported impact is limited to page content and settings modification.

The record

CVE
CVE-2025-12027
Published
Feb 19, 2026
Updated
Feb 19, 2026
Vendor
Extend Themes
Product
Mesmerize Companion
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <=1.6.158

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Extend Themes · Mesmerize Companionversion=* <=1.6.158

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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