What’s Vulnerable › Vulnerabilities
CVE-2026-86407: User Registration & Membership < 5.2.8 - Unauthenticated User Data Disclosure via Membership Thank You Page
- Severity: low (CVSS 3.7 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-13 · updated 2026-09-14
- Weakness: CWE-200
Description
The User Registration & Membership WordPress plugin before 5.2.8 does not verify that the visitor requesting its membership confirmation page owns the account named in the request, nor that any registration or purchase has taken place, allowing unauthenticated users to retrieve another user's email address, profile fields, role and membership order details. Exploitation requires the site owner to have added a user smart tag to that page's configurable message, which the shipped default does not contain.
Affected products
- User Registration & Membership: from 5.0 before 5.2.8 — fixed in 5.2.8
How to fix
Upgrade to a fixed version: User Registration & Membership 5.2.8. Check the vendor advisory for mitigations.
References
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