FIREFOX · CVE-2026-124912 · Runtime
NO FIX YET · SEE WHAT TO DO
A spoofing flaw in the DOM Security component of Firefox lets a malicious page mislead users about what they are looking at. The sources do not state the exact impact beyond spoofing.
first public Nov 10, 2026 · 1 source
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Anyone running Firefox older than version 160 or Firefox ESR older than 153.7. The sources do not describe a configuration that is required for exposure, so default installs appear to be in scope.
Not affected if up-to-date-firefox
Who cares browser, desktop, firefox
firefox --version on the command line.160153.7Spoofing issue in the DOM: Security component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.
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