Matan · Security · Content
Iframe sandbox
Third-party iframes should be sandboxed so they cannot break out into your origin easily.
Pass condition in our engine: External iframes have a sandbox attribute, or none exist.
1. Problem description
We flag cross-origin iframes without a sandbox attribute. You may need allow-scripts allow-same-origin for some widgets — add the minimum flags, not an unsandboxed frame.
2. Most common causes
- YouTube/maps embed copied without sandbox.
- Payment iframe from a vendor that forbids sandbox (document the exception).
3. How to fix it
- Add sandbox with the smallest allow-* list that still works.
- Prefer official embed snippets that include sandbox when provided.
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