Privilege escalation in User Registration & Membership

CVE-2026-79996

The User Registration & Membership WordPress plugin before 5.2.6 does not perform a capability check when saving its login settings, allowing authenticated users who have been granted a User Registration & Membership WordPress plugin before 5.2.6 management capability but not full administrator access to change arbitrary site options and escalate their privileges to administrator.

Vulnerability class: Privilege Escalation

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (38.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.2% 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-2026-79996: held from 0.003 to 0.005.

EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.001

Affected products

  • User Registration & Membership

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-79996?
CVE-2026-79996 is a high-severity vulnerability in User Registration & Membership, classified under Improper Privilege Management. CVSS score: 7.2/10. Published 2026-08-28.
How severe is CVE-2026-79996?
High severity. CVSS v3 base score is 7.2 out of 10.