Information disclosure in User Registration & Membership

CVE-2026-86407

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.

Vulnerability class: Information Disclosure

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

  • Unknown User Registration & Membership

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-86407?
CVE-2026-86407 is a low-severity vulnerability in User Registration & Membership, classified under Information Disclosure. CVSS score: 3.7/10. Published 2026-09-13.
How severe is CVE-2026-86407?
Low severity. CVSS v3 base score is 3.7 out of 10.