Insecure Direct Object Reference in User Profile Builder Plugin for WordPress
CVE-2026-3139

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor
Vendor
CVE Published:
31 March 2026

What is CVE-2026-3139?

The User Profile Builder plugin for WordPress is affected by an Insecure Direct Object Reference vulnerability, found in versions up to and including 3.15.5. The vulnerability exists within the wppb_save_avatar_value() function, which lacks proper validation of user-controlled input. This security issue allows authenticated attackers with subscriber-level access or higher to manipulate the 'post_author' key, enabling them to reassign ownership of arbitrary posts and attachments. As a result, this can lead to unauthorized access and potential content manipulation if left unaddressed.

Affected Version(s)

User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor 0 <= 3.15.5

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset/3481772/prof...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

M Indra Purnama
.