A security issue was found in Firefox before version 86.0. One phishing tactic on the web is to provide a link with HTTP Auth. For example https://www.phishingtarget.com@evil.com. To mitigate this type of attack, Firefox will display a warning dialog; however, this warning dialog would not have been displayed if evil.com used a redirect that was cached by the browser.
A security issue was found in Firefox before version 86.0. One phishing tactic on the web is to provide a link with HTTP Auth. For example https://www.phishingtarget.com@evil.com. To mitigate this type of attack, Firefox will display a warning dialog; however, this warning dialog would not have been displayed if evil.com used a redirect that was cached by the browser.
https://www.mozilla.org/en-US/security/advisories/mfsa2021-07/#CVE-2021-23972 https://bugzilla.mozilla.org/show_bug.cgi?id=1683536
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