CVE-2024-9391

firefox: Prevent users from exiting full-screen mode in Firefox Focus for Android

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Severity

Important

Red Hat Product Security

7.1

CVSS 3.1

Review impact separately from score.

Published · October 2, 2024

Updated · November 21, 2025

Description

A flaw was found in Mozilla. The Mozilla Foundation's Security Advisory describes the issue as follows: A user who enables full-screen mode on a specially crafted web page could potentially be prevented from exiting full-screen mode. This may allow spoofing of other sites as the address bar is no longer visible.

Statement

This bug only affects Firefox Focus for Android. Firefox versions shipped by Red Hat are unaffected.

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 3.1 · 7.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N

CWE not specified