Is No unsafe-inline free?

Yes, No unsafe-inline is free to use. It is available as a free plugin on WordPress.org.

How many websites use No unsafe-inline?

No unsafe-inline has 200 active installations as tracked by WordPress.org.

What are the best No unsafe-inline alternatives?

Popular alternatives to No unsafe-inline include Headers Security Advanced & HSTS WP, Content Security Policy Manager, GD Security Headers. You can compare them side-by-side on our comparison pages.

Does No unsafe-inline work with the latest WordPress?

No unsafe-inline has been tested up to WordPress 6.9.4. It requires WordPress 5.9+ and PHP 7.4+.

Is No unsafe-inline well supported?

No unsafe-inline has a 0% support resolution rate based on 4 recent support threads on WordPress.org.

PluginSift

No unsafe-inline

Name: No unsafe-inline
Rating: 5 (5 reviews)
Author: Giuseppe

No unsafe-inline helps you to build a Content Security Policy avoiding to use 'unsafe-inline' and 'unsafe-hashes'.

By Giuseppe·Csp·Free

5(5 reviews)

·200 active installs·Updated 4 months ago

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As of April 2026, No unsafe-inline is a WordPress csp plugin with 200 active installations and a 5/5 rating from 5 reviews. It has been downloaded 11K+ times in total. Requires WordPress 5.9+ and PHP 7.4+. Available on WordPress.org since 2022. Support resolution rate: 0%. Top alternative: Headers Security Advanced & HSTS WP.

5/55 reviews

200active installs

0%resolved

4 yearssince 2022

Overview

Content Security Policy (CSP) is a computer security standard introduced to prevent cross-site scripting (XSS), clickjacking and other code injection attacks resulting from execution of malicious content in the trusted web page context.
Cross-site scripting (XSS) is a type of security vulnerability that can be found in some web applications.
XSS attacks enable attackers to inject client-side scripts into web pages viewed by other users.
A cross-site scripting vulnerability may be used by attackers to bypass access controls like the same-origin policy.
Looking at National Vulnerability Database run by US NIST, more than 1100 (November 2025) vulnerabilities are reported as XSS for WordPress’ plugins and themes.

Keeping your site up-to-date with the latest versions of plugins and theme…

Read full description on WordPress.org