User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission <= 4.3.12 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'wpuf_payment_method' Parameter

ID

WPSEC-2026-0317

Plugin

User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission (wp-user-frontend)

Affected

all versions before 4.3.13

Remediation

Update to 4.3.13 or later.

CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Weakness

CWE-79

Usage

Plugin Low · Affected versions Low among sites WPSec scans, 2026-10-22

Attack surface

User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission on WPSec AttackSurface

Fix released

2026-10-01

Published

2026-10-02

Description

The User Frontend plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wpuf_payment_method' checkout parameter in all versions up to, and including, 4.3.12 due to insufficient input sanitization and output escaping. The checkout saved the raw request, including the unsanitized payment method, with each bank/manual order, and the admin Transactions list printed that value as the order's gateway without escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts that execute whenever an administrator views the transactions list.

References

• https://wpsec.com/vuln/WPSEC-2026-0317/
• https://plugins.svn.wordpress.org/wp-user-frontend/tags/4.3.13/
• https://wordpress.org/plugins/wp-user-frontend/

Published by WPSec. Provided as is, without warranty. Corrections: contact us.

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