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Squarespace fix guide

Missing Content Security Policy on Squarespace

No Content-Security-Policy header found. CSP helps prevent cross-site scripting (XSS) and data injection attacks.

Issue ID: SEC-CSP-001Severity: moderateEffort: M

Why this matters

No Content-Security-Policy header found. CSP helps prevent cross-site scripting (XSS) and data injection attacks. This affects browser trust signals and whether visitors feel safe submitting contact details.

Squarespace fix path

How to fix this on Squarespace

Check page settings, navigation, and code injection.

  1. 1Identify whether this is page-level or site-level.
  2. 2Apply the fix.
  3. 3Republish and confirm.

After you fix it

  • Check response headers for Content-Security-Policy with browser DevTools

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