Squarespace fix guide
Missing X-Content-Type-Options Header on Squarespace
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.
Squarespace fix path
How to fix this on Squarespace
Check page settings, navigation, and code injection.
- 1Identify whether this is page-level or site-level.
- 2Apply the fix.
- 3Republish and confirm.
After you fix it
- ✓Check response headers for X-Content-Type-Options: nosniff
Same fix, other platforms
Fix missing x-content-type-options header on a different CMS
Other fixes
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