CVE-2020-36156

An issue was discovered in the Ultimate Member plugin before 2.1.12 for WordPress, aka Authenticated Privilege Escalation via Profile Update

Critical · published January 4, 2021

CVSS v3.1
9.9
EPSS
2%
Percentile
81.1
In the wild
Unconfirmed
What it is

🚨 A mere tweak in a profile update lets users with admin access elevate their privileges to any role they fancy, including Administrator! 🔥 It's like letting a restaurant patron change their own reservation from a basic table to the VIP room just by asking the server to change the name on the booking sheet—no questions asked! This critical vulnerability means any malicious user with wp-admin access can grant themselves ultimate control over the site. Imagine someone stepping into the kitchen and taking charge, able to change menus, steal recipes, or shut down operations altogether! The consequences could be absolutely devastating.

Put simply

It's like letting a restaurant patron change their own reservation from a basic table to the VIP room just by asking the server to change the name on the booking sheet—no questions asked! This authenticated privilege escalation flaw in the Ultimate Member plugin allows users to modify the 'um-role' parameter during profile updates, bypassing standard permission checks.

What to do

This critical vulnerability means any malicious user with wp-admin access can grant themselves ultimate control over the site. Imagine someone stepping into the kitchen and taking charge, able to change menus, steal recipes, or shut down operations altogether! The consequences could be absolutely devastating. Update the Ultimate Member plugin to version 2.1.12 or later immediately. Additionally, review user access privileges and restrict wp-admin access to trusted users only. Regular audits can help catch such sneaky issues in the future! You've got this! Follow these steps and lock down your site like a pro! 🛡️

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:C/UI:N
CVSS v4.0
Not supplied
EPSS
0.02057 · 81.1th percentile
Published
2021-01-04T17:22Z
EPSS history
Timeline
  • 04 JAN 17:22Z
    An issue was discovered in the Ultimate Member plugin before 2.1.12 for WordPress, aka Authenticated Privilege Escalation via Profile Update
    cvelistv5