CVE-2021-23972

High

Description

One phishing tactic on the web is to provide a link with HTTP Auth. For example 'https://[email protected]'. 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. This vulnerability affects Firefox < 86.

SeverityHigh
CVSS8.8
Exploit probability—
ProductMozilla Firefox
PublishedFeb 26, 2021
First seenFeb 26, 2021

How to fix

Update
  • mozilla firefox86.0 or later

Affected products

ProductAffected versionsFixed in
mozilla firefoxv < 86.086.0

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CVE-2021-23972 · Mozilla Firefox · Dark Radar