CVE-2026-124914 · Runtime
NO FIX YET · SEE WHAT TO DO
A site isolation flaw in the DOM Navigation component of Firefox lets one website interfere with content from another site. The sources do not say what an attacker can read or change once the isolation is broken.
first public Nov 10, 2026 · 1 source
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Anyone running a Firefox build older than 160 or Firefox ESR older than 153.7. The sources do not describe any extra configuration or account needed to trigger it.
Not affected if up-to-date-firefox
Who cares browser, firefox
160153.7Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.
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