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Webflow fix guide

Missing HSTS Header on Webflow

HTTP Strict-Transport-Security is not set. Users can be downgraded to insecure HTTP connections via man-in-the-middle attacks.

Issue ID: SEC-HSTS-001Severity: majorEffort: S

Why this matters

HTTP Strict-Transport-Security is not set. Users can be downgraded to insecure HTTP connections via man-in-the-middle attacks. This affects browser trust signals and whether visitors feel safe submitting contact details.

Webflow fix path

How to fix this on Webflow

Use page settings, Designer, or project settings.

  1. 1Locate the element or setting causing the issue.
  2. 2Update it in Webflow.
  3. 3Publish and validate the output.

After you fix it

  • Check response headers for Strict-Transport-Security with curl -I or browser DevTools

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