Security Advisory
CVE-2021-38506
4.3
MEDIUM
Vulnerability Description
Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
Published Date
December 8, 2021
Official Source
NIST NVD Advisory