Deserialization in Wedevs User Frontend: Ai Powered Frontend Posting, Directory, Profile, Membership & Registration

CVE-2026-5127

The User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration plugin for WordPress is vulnerable to Deserialization of Untrusted Data in versions up to, and including, 4.3.1 This is due to insufficient input validation and type checking on the wpuf_files parameter during form submission, combined with unconditional deserialization via maybe_unserialize() when displaying post content. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary PHP objects, which can be leveraged to execute arbitrary code, delete arbitrary files, or perform other malicious actions if a POP chain is present on the target system.

Vulnerability class: Insecure Deserialization

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.9th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-5127: held from 0.010 to 0.013.

EPSS over last 30 days · oldest: 0.010 · newest: 0.013 · change: +0.004

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-5127?
CVE-2026-5127 is a high-severity vulnerability in Wedevs User Frontend: Ai Powered Frontend Posting, Directory, Profile, Membership & Registration, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-05-08.
How severe is CVE-2026-5127?
High severity. CVSS v3 base score is 8.8 out of 10.