CVE-2026-87067

Forminator Forms < 1.57.2.1 - Authenticated RCE via XML-RPC PHP Object Injection

Published Sep 20, 2026 CVSS 3.1 · 8.5 High EPSS < 1% KEV · Not listed
Description
The Forminator Forms WordPress plugin before 1.57.2.1 does not restrict which classes may be instantiated when it deserialises a value taken from an XML-RPC request, allowing users who hold its forms-management permission to write a file of their choosing and execute arbitrary code. That permission belongs to an administrator by default, and to any role the site has granted it through the Forminator Forms WordPress plugin before 1.57.2.1's own settings, so the issue is reachable well below administrator on sites that use that feature.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions forminator Forms
Vendors & Products Wordpress-extensions
Wordpress-extensions forminator Forms
Type Values Removed Values Added
Weaknesses CWE-502
Type Values Removed Values Added
Weaknesses CWE-94
Metrics cvssV3_1

{'score': 8.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-502
Type Values Removed Values Added
Description The Forminator Forms WordPress plugin before 1.57.2.1 does not restrict which classes may be instantiated when it deserialises a value taken from an XML-RPC request, allowing users who hold its forms-management permission to write a file of their choosing and execute arbitrary code. That permission belongs to an administrator by default, and to any role the site has granted it through the Forminator Forms WordPress plugin before 1.57.2.1's own settings, so the issue is reachable well below administrator on sites that use that feature.
Title Forminator Forms < 1.57.2.1 - Authenticated RCE via XML-RPC PHP Object Injection
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Sep 20, 2026, 1:49 PM
Reserved
Sep 8, 2026, 7:01 PM
Status
Deferred
Published
Sep 20, 2026, 7:16 AM
Modified
Sep 21, 2026, 1:34 PM