Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Content-Security-Policy: frame-ancestors doesn't work

  • 1 jibu
  • 1 ana tatizo hili
  • 1 view
  • Last reply by vinh.vu

vinh.vu
vinh.vu
more options

As mentioned here https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/frame-ancestors, CSP: frame-ancestors is supported from Firefox 33. However, it seems doesn't work.

I am trying to embed a 3-party site into our page using an iframe. The 3-party site did whitelist us using these headers - Content-Security-Policy: frame-ancestors 'self' https://*.ourdomain.com - X-Frame-Options: SAMEORIGIN

It works fine on Chrome, but not Firefox. I am using Firefox 79.

Is there anything wrong with our headers?

Thank you!

As mentioned here https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/frame-ancestors, CSP: frame-ancestors is supported from Firefox 33. However, it seems doesn't work. I am trying to embed a 3-party site into our page using an iframe. The 3-party site did whitelist us using these headers - Content-Security-Policy: frame-ancestors 'self' https://*.ourdomain.com - X-Frame-Options: SAMEORIGIN It works fine on Chrome, but not Firefox. I am using Firefox 79. Is there anything wrong with our headers? Thank you!

Chosen solution

There is a bug with nested iframe https://bugzilla.mozilla.org/show_bug.cgi?id=1404438

Read this answer in context 👍 0

All Replies (1)

vinh.vu
vinh.vu Mwenye swali
more options

Suluhisho teule

There is a bug with nested iframe https://bugzilla.mozilla.org/show_bug.cgi?id=1404438