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Squarespace fix guide

Permissive CORS Configuration on Squarespace

The Access-Control-Allow-Origin header is set to wildcard (*) or reflects any origin, which may allow unauthorized cross-origin access to resources.

Issue ID: SEC-CORS-001Severity: moderateEffort: S

Why this matters

The Access-Control-Allow-Origin header is set to wildcard (*) or reflects any origin, which may allow unauthorized cross-origin access to resources. 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 and confirm CORS is restricted to trusted origins

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