Privilege escalation in Metagauss Registrationmagic – Custom Registration Forms, User Registration, Payment, And Login

CVE-2025-15403

The RegistrationMagic plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 6.0.7.1. This is due to the 'add_menu' function is accessible via the 'rm_user_exists' AJAX action and allows arbitrary updates to the 'admin_order' setting. This makes it possible for unauthenticated attackers to injecting an empty slug into the order parameter, and manipulate the plugin's menu generation logic, and when the admin menu is subsequently built, the plugin adds 'manage_options' capability for the target role. Note: The vulnerability can only be exploited unauthenticated, but further privilege escalation requires at least a subscriber user.

Vulnerability class: Privilege Escalation

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.017 (76.3th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.3% 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-2025-15403: held from 0.016 to 0.017.

EPSS over last 30 days · oldest: 0.016 · newest: 0.017 · change: +0.001

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-15403?
CVE-2025-15403 is a critical-severity vulnerability in Metagauss Registrationmagic – Custom Registration Forms, User Registration, Payment, And Login, classified under Improper Privilege Management. CVSS score: 9.8/10. Published 2026-01-17.
How severe is CVE-2025-15403?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-15403 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.