Colin D. Munro

**Name of the Vulnerable Software and Affected Versions** Firefox versions prior to 88 **Description** The issue is related to the use of 3D CSS in conjunction with Javascript, allowing content to be rendered outside the webpage's viewport. This could result in a spoofing attack, potentially used for phishing or other attacks on a user. The exploitation of this issue may enable a remote attacker to conduct spoofing attacks. **Recommendations** For versions prior to 88, update to version 88 or later to resolve the issue. As a temporary workaround, consider disabling the use of 3D CSS in conjunction with Javascript until a patch is available. Restrict access to potentially vulnerable web pages to minimize the risk of exploitation.