User Registration & Membership < 5.2.8 - Unauthenticated User Data Disclosure via Membership Thank You Page (CVE-2026-86407) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-86407

User Registration & Membership < 5.2.8 - Unauthenticated User Data Disclosure via Membership Thank You Page

Answer in brief

CVE-2026-86407 records a Unknown severity vulnerability in User Registration & Membership < 5.2.8 - Unauthenticated User Data Disclosure via Membership Thank You Page. The current sources do not mark it as known exploited. The current feed maps Unknown/User Registration & Membership (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 13, 2026Updated Sep 13, 2026Source checked Sep 13, 2026First seen by HOL Sep 13, 2026Material review Sep 13, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/User Registration & Membership (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Unknown/User Registration & Membershipgeneric	>=5.0 <5.2.8	5.2.8

Recommended response

Check inventory. Check lockfiles and deployed manifests for Unknown/User Registration & Membership.
Review the reported fix. Update Unknown/User Registration & Membership to 5.2.8 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 13, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 13, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 13, 2026

Sources and claim methodology

Source referencewpscan.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.