REDHAT-BUG-2479863: High severity Mozilla Firefox vulnerability
Published May 19, 2026
·Updated
Sandbox escape in Firefox and Firefox Focus for Android. This vulnerability was fixed in Firefox 151.
Affected Software
2 affected components
Mozilla Firefox<151
Mozilla Firefox Focus<151
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
firefox/android/firefoxto a version that resolves this vulnerability.Fixed in 151 - Upgrade
Upgrade
firefox/android/firefox-focusto a version that resolves this vulnerability.Fixed in 151
Event History
May 19, 2026
Data Sourced
via Red Hat·02:02 PM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
What is the severity of REDHAT-BUG-2479863?
The severity of REDHAT-BUG-2479863 is high, rated at 7.
2
How do I fix REDHAT-BUG-2479863?
To fix REDHAT-BUG-2479863, update to Firefox version 151 or later.
3
What impact does REDHAT-BUG-2479863 have?
REDHAT-BUG-2479863 allows for a sandbox escape, potentially compromising user security.
4
Which software is affected by REDHAT-BUG-2479863?
REDHAT-BUG-2479863 affects Mozilla Firefox and Mozilla Firefox Focus for Android.
5
When was REDHAT-BUG-2479863 published?
REDHAT-BUG-2479863 was published on May 19, 2026.