Cross-Site Scripting Vulnerability in Ultimate Member Plugin by WordPress
CVE-2026-85680

Currently unrated

Key Information:

Vendor

WordPress
Status
Ultimate Member
Vendor
CVE Published:
19 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-85680?

The Ultimate Member plugin for WordPress versions prior to 2.13.1 contains a critical cross-site scripting (XSS) vulnerability. This flaw arises when user-supplied profile names are rendered in the page title without proper escaping, and HTML entities are decoded following initial sanitization. As a result, unauthenticated attackers can register accounts and store malicious JavaScript in profile names. When any visitor, including site administrators, views the compromised profiles, the injected scripts are executed, potentially leading to data theft and user compromise.

Affected Version(s)

Ultimate Member 0 < 2.13.1

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-2026-85680 - Proof of Concept

References

https://wpscan.com/vulnerability/a49b734f-2244-4d6f-8912-...
exploitvdb-entrytechnical-description

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Karthik Ramakrishnan
WPScan
.