REDHAT-BUG-2479876: Low severity Mozilla Firefox vulnerability
Published May 19, 2026
·Updated
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.
Affected Software
2 affected components
Mozilla Firefox<151
Mozilla Firefox ESR<140.11
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Mozilla Firefoxto a version that resolves this vulnerability.Fixed in 151 - Upgrade
Upgrade
Mozilla Firefox ESRto a version that resolves this vulnerability.Fixed in 140.11
Event History
May 19, 2026
Data Sourced
via Red Hat·02:03 PM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
What is the severity of REDHAT-BUG-2479876?
The severity of REDHAT-BUG-2479876 is classified as low.
2
How do I fix REDHAT-BUG-2479876?
To mitigate REDHAT-BUG-2479876, update to Firefox version 151 or Firefox ESR version 140.11.
3
What does REDHAT-BUG-2479876 involve?
REDHAT-BUG-2479876 involves a mitigation bypass in the DOM Security component.
4
Which software is affected by REDHAT-BUG-2479876?
REDHAT-BUG-2479876 affects Mozilla Firefox and Mozilla Firefox ESR.
5
When was REDHAT-BUG-2479876 published?
REDHAT-BUG-2479876 was published on May 19, 2026.