REDHAT-BUG-2570705: High severity vulnerability

Published Nov 10, 2026

Updated

Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 160, Firefox ESR 115.45, Firefox ESR 153.7, and Thunderbird 160.

Affected Software

0 affected components

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade Firefox to a version that resolves this vulnerability.
Fixed in 160
Upgrade
Upgrade Firefox ESR 115 to a version that resolves this vulnerability.
Fixed in 115.45
Upgrade
Upgrade Firefox ESR 153 to a version that resolves this vulnerability.
Fixed in 153.7
Upgrade
Upgrade Thunderbird to a version that resolves this vulnerability.
Fixed in 160

Event History

Nov 10, 2026

Data Sourced

via Red Hat·08:16 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

Which product versions contain the fix?

The vulnerability was fixed in Firefox 160, Firefox ESR 115.45, Firefox ESR 153.7, and Thunderbird 160.

What security boundary does this issue affect?

It affects the same-origin policy in the Networking: HTTP component, allowing a same-origin policy bypass.