REDHAT-BUG-2517849: Medium severity Mozilla Firefox vulnerability
Published Aug 18, 2026
·Updated
Mitigation bypass in the Storage: Cache API component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1.
Affected Software
2 affected components
Mozilla Firefox>154<154
Mozilla Firefox ESR>140.14<153.1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Firefox (Storage: Cache API)to a version that resolves this vulnerability.Fixed in 154 - Upgrade
Upgrade
Firefox ESR (Storage: Cache API)to a version that resolves this vulnerability.Fixed in 140.14 - Upgrade
Upgrade
Firefox ESR (Storage: Cache API)to a version that resolves this vulnerability.Fixed in 153.1
Event History
Aug 18, 2026
Data Sourced
via Red Hat·12:54 PM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Which Firefox releases contain the fix?
The issue was fixed in Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1.
2
Which component is affected?
The vulnerability affects the Storage: Cache API component.