CVE-2026-96574: User Frontend <= 4.3.12 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'wpuf_payment_method' Parameter

Vulnerability summary

CVE-2026-96574 is a medium (CVSS 6.4) Cross-site Scripting vulnerability in wedevs user frontend – membership, user registration, user profile, user directory & content restriction with frontend post submission. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.3% of scored vulnerabilities. Fixed in 4.3.13.

Timeline

1. 10-10-2026
   PublishedVulnerability first disclosed.
2. 11-10-2026
   Last modifiedVulnerability information updated.

Description

The User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wpuf_payment_method' parameter in all versions up to, and including, 4.3.12 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The bypass technique involves appending a valid gateway keyword such as 'bank' to the HTML payload, causing sanitize_text_field() to yield only the keyword for routing purposes while the full malicious raw value is stored and later rendered unescaped.

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.