Custom CSS and JS Security & Risk Analysis
wordpress.org/plugins/custom-css-and-jsCustom CSS and JavaScript allows you to add custom internal and external CSS and JavaScripts to individual posts.
Is Custom CSS and JS Safe to Use in 2026?
Generally Safe
Score 85/100Custom CSS and JS has no known CVEs and is actively maintained. It's a solid choice for most WordPress installations.
The 'custom-css-and-js' plugin version 1.0 exhibits a generally positive security posture based on the provided static analysis. The absence of AJAX handlers, REST API routes, shortcodes, and cron events significantly limits the potential attack surface. Furthermore, the code demonstrates good practice by using prepared statements for all SQL queries and avoids risky operations like file manipulation or external HTTP requests. There are no known vulnerabilities in its history, which is a strong indicator of good security development and maintenance.
Key Concerns
- Unescaped output detected
- No capability checks
- No nonce checks
Custom CSS and JS Security Vulnerabilities
Custom CSS and JS Code Analysis
Output Escaping
Custom CSS and JS Attack Surface
WordPress Hooks 1
Maintenance & Trust
Custom CSS and JS Maintenance & Trust
Maintenance Signals
Community Trust
Custom CSS and JS Alternatives
Per Post Scripts & Styles
per-post-scripts-and-styles
Properly and safely add specific Javascript and CSS stylesheets to single posts, pages, and custom post types.
Custom CSS and JavaScript
custom-css-and-javascript
Easily add custom CSS and JavaScript code to your WordPress site, with draft previewing, revisions, and minification!
Raw HTML
raw-html
Lets you use raw HTML or any other code in your posts. You can also disable smart quotes and other automatic formatting on a per-post basis.
Better WordPress Minify
bwp-minify
Allows you to combine and minify your CSS and JS files to improve page load time.
Insert JavaScript and CSS
insert-javascript-css
Adds fields to the post and page edit pages that allow you to insert custom JavaScript or CSS for that post or page.
Custom CSS and JS Developer Profile
1 plugin · 1K total installs
How We Detect Custom CSS and JS
Patterns used to identify this plugin on WordPress sites during automated security audits and web crawling.
Asset Fingerprints
HTML / DOM Fingerprints
/* <![CDATA[ *//* ]]> */