Admin CSS MU

Admin CSS MU has one disclosed vulnerability in the WordSec catalog, all reported in 2023; it is fixed as of September 2026. Their average CVSS score is 8.3, and the most serious one scores 8.3 out of 10. Severity breakdown: 0 critical and 1 high.

The most common weakness is Server-Side Request Forgery (SSRF), behind 1 of the records (100%).

The one issue recorded for Admin CSS MU has a vendor fix available, so running the current release closes it.

All of these findings were reported by Dave Jong. Admin CSS MU is installed on roughly 10,000 WordPress sites, so each unpatched flaw has a wide blast radius. The current release is tested up to WordPress 6.7.7.

Strategic Overview

Avg CVSSHigh

8.3/ 10

Patch Coverage100%

Open

Fixed

Get automatic notifications for all Admin CSS MU vulnerabilities before they are exploited.

Highest severity on recordCVSS 8.3CVE-2022-40700

CSSTidy - Server-Side Request Forgery

Read the full analysis

Vulnerability Records

1 records


2023-03-03 00:00	CSSTidy - Server-Side Request Forgery Admin CSS MU <= 2.6	`CVE-2022-40700`	8.3 High	Dave Jong	Yes

Showing 1–1 of 1 reports

Latestv2.10

Admin CSS MU

Author

Arun Basil Lal

4.5(26)

90/100

Last Updated

2024-12-09 (2y ago)

Active Installs

10,000+

Downloads

115,238

Requires WP

3.0+

Requires PHP

7.0+

Tested up to

WP 6.7.7

Created

2012-06-26 (14y ago)

A simple plugin that lets you add your custom CSS to style the WordPress Admin. Works with WordPress single install and WordPress multisites. Version 2.0 is updated wtih an Admin interface and can be found in Appearance > Admin CSS MU Admin CSS MU uses CSSTidy to clean and optionally minify CSS. CSS is only minified while using it. The editor always shows un-minified CSS for easy editing. Note: If you want to easily add custom CSS on your Login and Front-end as well (along with WordPress Admin), use my Custom Login Admin Front-end CSS plugin instead.

View on WordPress.org