CVE-2026-124905 · Runtime
NO FIX YET · SEE WHAT TO DO
A flaw in the DOM Navigation component of Firefox lets web content escape the browser's sandbox. A successful attack could let a malicious web page reach beyond the sandboxed content process.
first public Nov 10, 2026 · 1 source
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Anyone running Firefox or Firefox ESR builds older than the fixed versions. Browsers that auto-update and are already on a fixed release are not exposed. Sources do not say which page or navigation pattern triggers the flaw.
Not affected if patched-version
Who cares browser, desktop, firefox
firefox --version160, 115.45, 153.7160115.45153.7Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 160, Firefox ESR 115.45, and Firefox ESR 153.7.
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