FIREFOX · CVE-2026-124895 · Runtime
NO FIX YET · SEE WHAT TO DO
Firefox has a use-after-free bug in its localStorage and sessionStorage component, which handles data web pages store in the browser. The sources do not state what an attacker gets beyond the memory corruption itself.
first public Nov 10, 2026 · 1 source
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Anyone running a Firefox build older than the fixed versions is exposed, since the bug sits in the browser's own storage code that every web page can reach. Users on a patched Firefox release can skip it. The sources do not say whether exploitation needs any particular page or action.
Not affected if patched-firefox
Who cares browsers, desktop, firefox
firefox --version on the command line.160, Firefox ESR 115.45, and Firefox ESR 153.7.160115.45Use-after-free in the Storage: localStorage & sessionStorage component. This vulnerability was fixed in Firefox 160, Firefox ESR 115.45, and Firefox ESR 153.7.
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153.7