This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Mozilla Support में खोजें

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.

Firefox private browsing trims request referrer headers.

  • 1 प्रत्युत्तर दें
  • 1 यह समस्या है
  • 7 views
  • के द्वारा अंतिम प्रतियुतर philipp

matthew.was
matthew.was
more options

A site I develop for checks authenticity by checking a passed value confirming it it valid for a given referring url. The request has a referrer header which in regular windowed firefox is the full url of the requesting site. In private browsing mode the referrer header is only the host part of the url and does not contain the full path. It is the path that is commonly required to verify the site. Is this expected behaviour or a bug?

This has been confirmed both on macOS and Windows 10 using Firefox Quantum 61.0.

A site I develop for checks authenticity by checking a passed value confirming it it valid for a given referring url. The request has a referrer header which in regular windowed firefox is the full url of the requesting site. In private browsing mode the referrer header is only the host part of the url and does not contain the full path. It is the path that is commonly required to verify the site. Is this expected behaviour or a bug? This has been confirmed both on macOS and Windows 10 using Firefox Quantum 61.0.

All Replies (1)

philipp
philipp
  • Moderator
more options

hi, yes that appears to be the intended behaviour accoring to https://blog.mozilla.org/security/2018/01/31/preventing-data-leaks-by-stripping-path-information-in-http-referrers/