Stored Cross-Site Scripting Vulnerability in User Profile Builder by WordPress
CVE-2026-76546

6.8MEDIUM

Key Information:

Vendor

WordPress
Status
User Profile Builder
Vendor
CVE Published:
29 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-76546?

The User Profile Builder plugin for WordPress, prior to version 4.0.1, contains a vulnerability due to insufficient output escaping of its optional shortcode. This flaw could allow users with contributor privileges to execute Stored Cross-Site Scripting (XSS) attacks. Any user viewing the affected content, including administrators, could be susceptible to these attacks, presenting significant security risks when exploited.

Affected Version(s)

User Profile Builder 3.3.4 < 4.0.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-76546 - Proof of Concept

References

https://wpscan.com/vulnerability/2c67d682-3e11-4fcd-9aae-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Muni Nitish Kumar Yaddala
WPScan
.