CVE-2023-4051

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 116 Firefox ESR versions prior to 115.2 Thunderbird versions prior to 115.2

Description The issue is related to incorrect limitation of visualizable layers in the user interface, potentially leading to user confusion and spoofing attacks. A website could obscure the full screen notification by using the file open dialog.

Recommendations For Firefox versions prior to 116, update to version 116 or later. For Firefox ESR versions prior to 115.2, update to version 115.2 or later. For Thunderbird versions prior to 115.2, update to version 115.2 or later.