Vulnerability · Published Aug 28, 2026 · Assigned by WPScan
CVE-2026-14558WP User Frontend < 4.3.10 - Editor+ PHP Object Injection via AI Form Builder
High 7.2
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 0.8% (higher than 56% of all known vulnerabilities).
Severity (CVSS 3.1)7.2High
Exploit odds (30 days)0.8%top 44.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The User Frontend WordPress plugin before 4.3.10 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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | User Frontend | 0 – before 4.3.10 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
References
- https://wpscan.com/vulnerability/217303f4-4363-46f6-8aee-8e0c1aedc271/ exploit, vdb-entry, technical-description