EUVD-2026-69865
GHSA-f6hp-2qj5-48vv
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AC:H reflects the prerequisite of a suitable gadget chain; PR:L captures mandatory subscriber-level authentication; full C/I/A impact applies if RCE is achieved.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
Lifecycle Timeline
6DescriptionCVE.org
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.
AnalysisAI
PHP Object Injection in the User Frontend WordPress plugin (versions before 4.3.11) allows any authenticated subscriber-level user to trigger deserialization of attacker-controlled field values by reopening a previously submitted post in the plugin's frontend editing form. If a suitable PHP gadget chain is present in the WordPress installation - supplied by other installed themes or plugins - this escalates to full remote code execution. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires: (1) the User Frontend WordPress plugin version below 4.3.11 is installed and active; (2) the attacker holds at least a subscriber-level WordPress account on the target site - anonymous unauthenticated access is insufficient; (3) the WordPress installation must contain a PHP gadget chain reachable through deserialization, typically supplied by other installed plugins or themes. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score using AV:N/AC:L/PR:L/UI:N reflects network accessibility with only subscriber-level authentication required, but the AC:L metric understates a real prerequisite: a usable gadget chain must exist in the target WordPress installation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Update the User Frontend plugin to version 4.3.11 or later immediately - this is the vendor-released patch that eliminates the unsafe deserialization. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all WordPress installations to identify those running the User Frontend plugin and document current versions. …
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Threat intelligence, references, and detailed analysis are available after sign-in.
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External POC / Exploit Code
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