Vulnerability · Published Sep 2, 2026 · Assigned by WPScan

CVE-2026-19116WP User Frontend < 4.3.11 - Subscriber+ PHP Object Injection via Frontend Post Edit Form

High 8.8

In plain English

A high-severity unsafe deserialization in User Frontend from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.7%top 45.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Unknown	User Frontend	0 – before 4.3.11

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://wpscan.com/vulnerability/019d83bd-24d3-4575-9d0b-55f75fdb0bfa/ exploit, vdb-entry, technical-description