CVE-2022-31738
Mozilla: Browser window spoof using fullscreen mode
Severity
ImportantRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · May 31, 2022
Updated · November 21, 2025
Description
A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue of when exiting fullscreen mode, an iframe could have confused the browser about the current state of the fullscreen, resulting in potential user confusion or spoofing attacks.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 7.5CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-1021 · Improper Restriction of Rendered UI Layers or Frames