How severe is CVE-2026-4100?

High severity. CVSS v3 base score is 7.1 out of 10.

Auth bypass in Strangerstudios Paid Memberships Pro – Content Restriction, User Registration, & Subscriptions

CVE-2026-4100

The Paid Memberships Pro plugin for WordPress is vulnerable to unauthorized modification and disruption of Stripe webhook configuration in all versions up to, and including, 3.6.5. This is due to missing capability checks on the `wp_ajax_p…

Vulnerability class: Broken Access Control

EPSS: 0.000 (14.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.

Affected products

Strangerstudios Paid Memberships Pro – Content Restriction, User Registration, & Subscriptions — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2026-4100?: CVE-2026-4100 is a high-severity vulnerability in Strangerstudios Paid Memberships Pro – Content Restriction, User Registration, & Subscriptions, classified under Missing Authorization. CVSS score: 7.1/10. Published 2026-05-02.
How severe is CVE-2026-4100?: High severity. CVSS v3 base score is 7.1 out of 10.