Replace 'unsafe-inline' scripts with nonces or hashes on Shopify
Why it matters
With 'unsafe-inline' any script an attacker manages to inject into the page runs, which cancels most of what a CSP protects. Nonces or hashes let only the inline scripts you wrote run.
Staged change. Do this in stages and check each one before the next, so a mistake does not break your site or your mail.
The fix
Not possible on Shopify. Shopify's own header has no fetch directives, so this policy comes from a meta http-equiv Content-Security-Policy tag in layout/theme.liquid or from an app, which you can edit. But Shopify and apps print inline scripts and Liquid cannot make per-response nonces, so removing 'unsafe-inline' would break the store.
Related
- Reported by the Content-Security-Policy check
- Add a Content-Security-Policy
- Enforce the report-only Content-Security-Policy
- Send the Content-Security-Policy as an HTTP header
- Restrict where scripts can load from
- Remove 'unsafe-eval' from script-src
- Remove wildcard sources from script-src
- Set object-src to 'none'
- Add base-uri to the Content-Security-Policy
- Reduce reliance on inline styles
- Fix the Content-Security-Policy syntax
Scan your domain to see whether this applies to you.