User Registration <= 4.4.9 - Authenticated (Subscriber+) Arbitrary Shortcode Execution

5.4
Improper Control of Generation of Code ('Code Injection')
CVE CVE-2026-24353
CVSS 5.4 (Medium)
Publicly Published January 8, 2026
Last Updated February 3, 2026
Researcher Kishan Vyas

Description

The The User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 4.4.9. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for authenticated attackers, with Subscriber-level access and above, to execute arbitrary shortcodes.

References

Share

Vulnerability Details for User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder

Software Type Plugin
Software Slug user-registration (view on wordpress.org)
Patched? Yes
Remediation Update to version 5.0, or a newer patched version
Affected Version
  • <= 4.4.9
Patched Version
  • 5.0

Recent vulnerabilities in User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder

# Title CVE ID CVSS Researchers Date
1 User Registration & Membership <= 5.2.2 - Missing Authorization to Unauthenticated User Deletion via Stripe Handler CVE-2026-11966 5.3 Daniel Púa - devploit June 26, 2026
2 User Registration & Membership <= 5.2.2 - Unauthenticated Privilege Escalation CVE-2026-11961 8.1 Khaled Alenazi (Nxploited) June 26, 2026
3 User Registration & Membership <= 5.2.0 - Missing Authorization to Unauthenticated Payment Bypass CVE-2026-1869 6.5 Supakiad S. (m3ez) June 25, 2026
4 User Registration & Membership <= 5.2.1 - Unauthenticated PayPal Bypass to Membership Activation CVE-2026-11964 5.3 Alessandro Greco aka Aleff, Giovanbattista Ianni (University of Calabria - UNICAL) June 22, 2026
5 User Registration & Membership <= 5.2.1 - Authenticated (Subscriber+) Insecure Direct Object Reference to Membership Tier Modification CVE-2026-11963 4.3 Revanth Hari Narayana Matte June 22, 2026
6 User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder <= 5.2.2 - Missing Authorization CVE-2026-52701 5.3 nobody09 June 22, 2026
7 User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder <= 5.1.2 - Missing Authorization CVE-2026-25425 5.3 0xd4rk5id3 May 28, 2026
8 User Registration & Membership <= 5.1.5 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Media Deletion via 'profile-pic-url' Parameter CVE-2026-7651 5.3 Supakiad S. (m3ez) May 27, 2026
9 User Registration & Membership <= 5.1.5 - Unauthenticated Missing Authorization to Admin Approval Bypass via 'action' Parameter CVE-2026-6145 5.3 Anthony Cihan (Hann1bl3L3ct3r) May 13, 2026
10 User Registration & Membership <= 5.1.4 - Missing Authorization to Authenticated (Contributor+) Limited Page Content Modification CVE-2026-3601 4.3 Hunter Jensen (skid) May 4, 2026

Did you know Wordfence Intelligence provides free personal and commercial API access to our comprehensive WordPress vulnerability database, along with a free webhook integration to stay on top of the latest vulnerabilities added and updated in the database? Get started today!

Learn more

Want to get notified of the latest vulnerabilities that may affect your WordPress site?
Install Wordfence on your site today to get notified immediately if your site is affected by a vulnerability that has been added to our database.

Get Wordfence

The Wordfence Intelligence WordPress vulnerability database is completely free to access and query via API. Please review the documentation on how to access and consume the vulnerability data via API.

Documentation