CVE-2026-14558

WP User Frontend < 4.3.10 - Editor+ PHP Object Injection via AI Form Builder

The User Frontend WordPress plugin before 4.3.10 does not properly validate field type definitions and deserialises user-controlled post metadata when rendering submitted posts, allowing users with Editor-level access and above to inject arbitrary PHP objects, which can lead to remote code execution when a suitable POP chain is present on the site.

Affected

User Frontend

CVSS v3.1 CNA

7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

0.52% chance of exploitation in the next 30 days, 43rd percentile

Published

2026-08-28

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/217303f4-4363-46f6-8aee-8e0c1aedc271/

References

• CVE Record
• NVD entry