What is CVE-2026-104401?

CVE-2026-104401 is a medium-severity vulnerability in Memberful - Membership Plugin, classified under Exposure of Sensitive System Information to an Unauthorized Control Sphere. CVSS score: 4.3/10. Published 2026-10-05.

How severe is CVE-2026-104401?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Memberful - Membership Plugin

CVE-2026-104401

Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in Memberful Memberful - Membership Plugin memberful-wp allows Retrieve Embedded Sensitive Data.This issue affects Memberful - Membership Plugin: from n/a through 1.81.2.

Published 2026-10-05 · last modified 2026-10-05.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Memberful - Membership Plugin

Weakness classification (CWE)

CWE-497 — Exposure of Sensitive System Information to an Unauthorized Control Sphere

References

patchstack.com/database/wordpress/plugin/memberful-wp/vulnerability/wordpress-m… (vdb-entry)

Frequently asked questions

What is CVE-2026-104401?: CVE-2026-104401 is a medium-severity vulnerability in Memberful - Membership Plugin, classified under Exposure of Sensitive System Information to an Unauthorized Control Sphere. CVSS score: 4.3/10. Published 2026-10-05.
How severe is CVE-2026-104401?: Medium severity. CVSS v3 base score is 4.3 out of 10.