Vulnerability in User Registration & Membership

CVE-2026-16736

The User Registration & Membership WordPress plugin before 5.2.6 does not enforce the site's registration-disabled setting when processing registration-form submissions, allowing unauthenticated users to create new accounts even when the administrator has turned off open registration.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (35.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-16736: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

  • User Registration & Membership — versions 0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-16736?
CVE-2026-16736 is a high-severity vulnerability in User Registration & Membership, classified under Improper Access Control. CVSS score: 7.5/10. Published 2026-08-05.
How severe is CVE-2026-16736?
High severity. CVSS v3 base score is 7.5 out of 10.