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Shopify fix guide

Missing X-Content-Type-Options Header on Shopify

Without X-Content-Type-Options: nosniff, browsers may MIME-sniff responses away from the declared content type, enabling attacks.

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

Why this matters

Without X-Content-Type-Options: nosniff, browsers may MIME-sniff responses away from the declared content type, enabling attacks. This affects browser trust signals and whether visitors feel safe submitting contact details.

Shopify fix path

How to fix this on Shopify

Use theme settings, page settings, or theme code.

  1. 1Find the source of the issue in Shopify admin.
  2. 2Apply the change.
  3. 3Preview and publish.

After you fix it

  • Check response headers for X-Content-Type-Options: nosniff

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