CVE-2026-124913 is a vulnerability in Mozilla Firefox
Published on November 10, 2026
Site isolation issue in the Networking component
Site isolation issue in the Networking component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.
Products Associated with CVE-2026-124913
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Affected Versions
Mozilla Firefox:- Version 153.7, <= 153.* is unaffected.
- Version 160, <= * is unaffected.