CVE-2026-16387
CRITICAL SEVERITYCVSS Score & Metrics
Base Score
9.8 / 10
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability Description
Site isolation issue in the Networking component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-200
Source
NVD
Vendor
Mozilla
Product
Firefox
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