CVE-2026-124894 · Runtime
NO FIX YET · SEE WHAT TO DO
A use-after-free bug in Firefox's cookie networking code can corrupt memory when a page is loaded. The sources do not state what an attacker gets beyond memory corruption.
first public Nov 10, 2026 · 1 source
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Anyone running Firefox or Firefox ESR older than the fixed versions. The sources do not say whether specific settings or sites are needed to trigger it.
Not affected if firefox-160-or-later, firefox-esr-153.7-or-later
Who cares browsers, firefox
160 or later.153.7 or later.Use-after-free in the Networking: Cookies component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.
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