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Wix fix guide

Cross-Origin Isolation Headers Not Configured on Wix

One or more cross-origin isolation headers (COOP, COEP, CORP) are not set. These headers provide defense-in-depth but are only required if your site uses features like SharedArrayBuffer or needs strict cross-origin isolation.

Issue ID: SEC-CROSS-ORIGIN-ISOLATION-001Severity: advisoryEffort: S

Why this matters

One or more cross-origin isolation headers (COOP, COEP, CORP) are not set. These headers provide defense-in-depth but are only required if your site uses features like SharedArrayBuffer or needs strict cross-origin isolation. This affects browser trust signals and whether visitors feel safe submitting contact details.

Wix fix path

How to fix this on Wix

Use page settings and editor sections first.

  1. 1Find the relevant page or site setting.
  2. 2Apply the change in Wix Editor.
  3. 3Publish and validate the result.

After you fix it

  • ✓Confirm all three cross-origin headers are present in response headers

Same fix, other platforms

Fix cross-origin isolation headers not configured on a different CMS

Other fixes

More Wix fixes

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