CVE-2026-5127: User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration (WordPress plugin) · Deserialization of Untrusted Data
Affects User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration (WordPress plugin)Source CVE Database V5
Not known to be exploited · CVSS 8.8 High.
Data as of 29 Oct 2026, 19:04 UTC
- EPSS
- 0.9% chance of exploitation in 30 days – higher than 61% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 8 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| wedevsUser Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration | Affected
| Fixed in– |
AI-suggested
Until an official fix is released, restrict Subscriber-level access if possible and monitor for suspicious activity related to form submissions involving the wpuf_files parameter. Avoid using the affected plugin version in high-risk environments.
Description
CVE-2026-5127 is a high-severity vulnerability in the WordPress plugin 'User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration' up to version 4.3.1. It involves deserialization of untrusted data via the wpuf_files parameter during form submission, allowing authenticated users with Subscriber-level access or higher to inject arbitrary PHP objects. This can lead to arbitrary code execution, file deletion, or other malicious actions if a suitable POP chain exists on the target system. No official patch or remediation guidance is currently available.
References
- wordfence.com/threat-intel/vulnerabilities/id/2b5d27cc-c6eb-4c5c-8ee1-30483b91c6fd?source=cve (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/trunk/wpuf-functions.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.2.10/wpuf-functions.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/trunk/wpuf-functions.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.2.10/wpuf-functions.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/trunk/includes/Traits/FieldableTrait.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.2.10/includes/Traits/FieldableTrait.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/trunk/includes/Traits/FieldableTrait.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.2.10/includes/Traits/FieldableTrait.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/trunk/includes/Traits/FieldableTrait.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.2.10/includes/Traits/FieldableTrait.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/trunk/includes/Traits/FieldableTrait.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.2.10/includes/Traits/FieldableTrait.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/trunk/includes/Ajax/Frontend_Form_Ajax.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.2.10/includes/Ajax/Frontend_Form_Ajax.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/trunk/includes/Ajax/Frontend_Form_Ajax.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.2.10/includes/Ajax/Frontend_Form_Ajax.php (opens in a new tab)
- plugins.trac.wordpress.org/changeset/3514258/wp-user-frontend/trunk/includes/Traits/FieldableTrait.php (opens in a new tab)
- plugins.trac.wordpress.org/changeset?old_path=%2Fwp-user-frontend/tags/4.3.1&new_path=%2Fwp-user-frontend/tags/4.3.2 (opens in a new tab)