
Simple CSS Security & Risk Analysis
wordpress.org/plugins/simple-cssAdd CSS to your website through an admin editor, the Customizer or a metabox for page/post specific CSS.
Is Simple CSS Safe to Use in 2026?
Generally Safe
Score 100/100Simple CSS has no known CVEs and is actively maintained. It's a solid choice for most WordPress installations.
The simple-css plugin v1.1.1 exhibits a strong security posture based on the provided static analysis. The absence of any identified AJAX handlers, REST API routes, shortcodes, or cron events significantly limits the plugin's attack surface. Furthermore, the code signals indicate good security practices, with all SQL queries using prepared statements and the presence of nonce and capability checks. The lack of dangerous functions, file operations, and external HTTP requests also contributes to a secure design.
The vulnerability history for this plugin is clean, with no recorded CVEs. This suggests a consistent focus on security by the developers or a history of successful vulnerability mitigation. The taint analysis showing no unsanitized paths further reinforces the impression of well-handled input and output sanitization. While the output escaping is not perfect (60% proper), the overall picture is one of a robustly secured plugin with minimal potential for exploitation based on this data.
Key Concerns
- Partial output escaping
Simple CSS Security Vulnerabilities
Simple CSS Code Analysis
Output Escaping
Simple CSS Attack Surface
WordPress Hooks 7
Maintenance & Trust
Simple CSS Maintenance & Trust
Maintenance Signals
Community Trust
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Simple CSS Developer Profile
9 plugins · 890K total installs
How We Detect Simple CSS
Patterns used to identify this plugin on WordPress sites during automated security audits and web crawling.
Asset Fingerprints
/wp-content/plugins/simple-css/js/codemirror.js/wp-content/plugins/simple-css/js/css.js/wp-content/plugins/simple-css/css/codemirror.css/wp-content/plugins/simple-css/css/ambiance.css/wp-content/plugins/simple-css/css/style.css/wp-content/plugins/simple-css/js/live-preview.js/wp-content/plugins/simple-css/js/codemirror.js/wp-content/plugins/simple-css/js/css.js/wp-content/plugins/simple-css/js/live-preview.jsHTML / DOM Fingerprints
simple-css-containersimple-css-sidebardata-theme