CVE-2021-29975
Through a series of DOM manipulations, a message, over which the attacker had control of the text but not HTML or formatting, could be overlaid on top of another domain (with the new domain correctly shown in the address bar) resulting in possible user confusion. This vulnerability affects Firefox < 90. Date published : 2021-08-05 https://bugzilla.mozilla.org/show_bug.cgi?id=1713259