CVE-2026-19116

WP User Frontend < 4.3.11 - Subscriber+ PHP Object Injection via Frontend Post Edit Form

Published Sep 2, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
The User Frontend WordPress plugin before 4.3.11 does not prevent user-supplied field values from being deserialized when a submitted post is reopened in its frontend editing form, allowing authenticated users with subscriber-level access and above to perform PHP Object Injection, which may lead to remote code execution when a suitable gadget chain is present on the site.

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 user Frontend
Vendors & Products Wordpress-extensions
Wordpress-extensions user Frontend
Type Values Removed Values Added
Weaknesses CWE-94
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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
CWE-94
Type Values Removed Values Added
Description The User Frontend WordPress plugin before 4.3.11 does not prevent user-supplied field values from being deserialized when a submitted post is reopened in its frontend editing form, allowing authenticated users with subscriber-level access and above to perform PHP Object Injection, which may lead to remote code execution when a suitable gadget chain is present on the site.
Title WP User Frontend < 4.3.11 - Subscriber+ PHP Object Injection via Frontend Post Edit Form
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Sep 2, 2026, 10:45 AM
Reserved
Aug 6, 2026, 2:36 PM
Status
Deferred
Published
Sep 2, 2026, 6:17 AM
Modified
Sep 3, 2026, 5:50 PM