User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder 5.0 - 5.2.7 - Unauthenticated Information Exposure
Strategic Overview
- Status
- Patched in 5.2.8
- Affected Version
5.0 – 5.2.7- CVSS
- 5.3Medium
- Weakness type
- CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
- CVE
CVE-2026-86407
At a glance
CVE-2026-86407 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the User Registration & Membership WordPress plugin, affecting versions 5.0 – 5.2.7. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 5.2.8; sites on affected versions should update now. Disclosed September 2026, reported by Karthik Ramakrishnan.
Vulnerability Overview
The User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder plugin for WordPress is vulnerable to Sensitive Information Exposure in versions 5.0 through 5.2.7. This makes it possible for unauthenticated attackers to extract sensitive user or configuration data.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Reaching this weakness in User Registration & Membership 5.0 – 5.2.7 takes no account at all. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.
The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For User Registration & Membership the fix is 5.2.8: builds 5.0 – 5.2.7 are affected, anything from 5.2.8 onward is not.
Remediation
Update to version 5.2.8, or a newer patched version
How does WordSec protect against this?
This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: User Registration & Membership 5.2.8 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder
- 9.9CVE-2023-3342: User Registration <= 3.0.2 Arbitrary File Upload
CVE-2023-3342 - 9.8CVE-2026-32488: User Registration & Membership RCE
CVE-2026-32488 - 9.8CVE-2026-1492: User Registration & Membership Privilege Escalation
CVE-2026-1492 - 9.8CVE-2025-2563: User Registration & Membership Privilege Escalation
CVE-2025-2563 - 8.8CVE-2024-2417: User Registration Authenticated (Subscriber+)
CVE-2024-2417 - 8.8CVE-2023-3343: User Registration <= 3.0.1 PHP Object Injection
CVE-2023-3343 - 8.8CVE-2022-3912: User Registration <= 2.2.4 Arbitrary File Upload
CVE-2022-3912 - 8.1CVE-2026-11961: User Registration & Membership Privilege Escalation
CVE-2026-11961
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C