Custom CSS Pro

Custom CSS Pro has one disclosed vulnerability in the WordSec catalog, all reported in 2019; it is fixed as of September 2026. Their average CVSS score is 8.8, and the most serious one scores 8.8 out of 10. Severity breakdown: 0 critical and 1 high.

The most common weakness is Cross-Site Request Forgery (CSRF), behind 1 of the records (100%).

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

All of these findings were reported by Dai Nakamura. Custom CSS Pro is installed on roughly 7,000 WordPress sites, so each unpatched flaw has a wide blast radius. The current release is tested up to WordPress 7.1.

Strategic Overview

Avg CVSSHigh

8.8/ 10

Patch Coverage100%

Open

Fixed

Get automatic notifications for all Custom CSS Pro vulnerabilities before they are exploited.

Highest severity on recordCVSS 8.8CVE-2019-5984

Custom CSS Pro <= 1.0.3 - Cross-site Request Forgery

Read the full analysis

Vulnerability Records

1 records


2019-06-24 00:00	Custom CSS Pro <= 1.0.3 - Cross-site Request Forgery Custom CSS Pro <= 1.0.3	`CVE-2019-5984`	8.8 High	Dai Nakamura	Yes

Showing 1–1 of 1 reports

Latestv1.0.8

Custom CSS Pro

Author

YellowPencil

5.0(15)

100/100

Last Updated

2026-08-23 (20d ago)

Active Installs

7,000+

Downloads

74,294

Requires WP

4.0+

Requires PHP

Tested up to

WP 7.1

Created

2016-07-30 (10y ago)

Professional real-time CSS editor for those who want to code CSS. Key Features professional CSS Editor. Real-time live preview. Simple UI.

View on WordPress.org