How severe is CVE-2026-15222?

Medium severity. CVSS v3 base score is 5.4 out of 10.

RCE in Wpeverest User Registration & Membership – Free Paid Memberships, Subscriptions, Content Restriction, Profile, Custom Login Builder

CVE-2026-15222

The The User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 5.2.8. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for authenticated attackers, with subscriber-level access and above, to execute arbitrary shortcodes.

Vulnerability class: RCE (Remote Code Execution)

Published 2026-10-16 · last modified 2026-10-16.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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

Wpeverest User Registration & Membership – Free Paid Memberships, Subscriptions, Content Restriction, Profile, Custom Login Builder

Weakness classification (CWE)

CWE-94 — Code Injection

References

Frequently asked questions

What is CVE-2026-15222?: CVE-2026-15222 is a medium-severity vulnerability in Wpeverest User Registration & Membership – Free Paid Memberships, Subscriptions, Content Restriction, Profile, Custom Login Builder, classified under Code Injection. CVSS score: 5.4/10. Published 2026-10-16.
How severe is CVE-2026-15222?: Medium severity. CVSS v3 base score is 5.4 out of 10.