REDHAT-BUG-2569846: Medium severity vulnerability
Published Nov 10, 2026
·Updated
Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, and Thunderbird 160.
Affected Software
0 affected components
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Firefoxto a version that resolves this vulnerability.Fixed in 160 - Upgrade
Upgrade
Firefox ESRto a version that resolves this vulnerability.Fixed in 153.7 - Upgrade
Upgrade
Thunderbirdto a version that resolves this vulnerability.Fixed in 160
Event History
Nov 10, 2026
Data Sourced
via Red Hat·07:18 PM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Which releases contain the fix?
The issue was fixed in Firefox 160, Firefox ESR 153.7, and Thunderbird 160.
2
Where can I check for Red Hat updates related to this issue?
Red Hat lists related errata at RHSA-2026:99110, RHSA-2026:99111, and RHSA-2026:99112.