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How do I use a Content Security Policy to stop inline scripts?

Asked on Sep 24, 2025

Answer

To stop inline scripts using a Content Security Policy (CSP), you need to configure the CSP to disallow 'unsafe-inline' and use nonces or hashes for any inline scripts you wish to permit.

<!-- BEGIN COPY / PASTE -->
    Content-Security-Policy: script-src 'self' 'nonce-<random-value>';
    <!-- END COPY / PASTE -->

Additional Comment:

Using a nonce (number used once) allows specific inline scripts to run by matching the nonce value.
Ensure that each nonce is unique per request to maintain security.
Hashes can also be used as an alternative to nonces for specific inline scripts.

✅ Answered with Security best practices.

Ask any question about Website Security here... and get an instant response.

How do I use a Content Security Policy to stop inline scripts?

Asked on Sep 24, 2025

Answer

Additional Comment:

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