Blocked form submission: the frame is sandboxed without allow-forms
Your iframe has a sandbox attribute without allow-forms. A form in the frame does not send when the user submits it, and the browser writes this message.
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- Edge
- Firefox
- Safari
Updated
Blocked form submission to 'https://example.com/login' because the form's frame is sandboxed and the 'allow-forms' permission is not set.
The form shows, but nothing happens when you submit it.
Blocked form submission to 'https://example.com/login' because the form's frame is sandboxed and the 'allow-forms' permission is not set.
The form shows, but nothing happens when you submit it.
On this page
What it means
Why it happens
Check the page
See the headers the page sends now
Fix it if you own the site
<iframe src="https://example.com/" sandbox="allow-scripts allow-forms"></iframe>
Do not add allow-scripts and allow-same-origin together to a frame from your own origin. The page in the frame can then remove its own sandbox.
If you do not own the site
- Ask for the flag
Ask the owner of the embed code to add allow-forms to the sandbox attribute.
- Open the page in a new tab
Link to the page so it runs with no sandbox.