FIREFOX · CVE-2026-124892 · Runtime
NO FIX YET · SEE WHAT TO DO
A use-after-free bug in Firefox's JavaScript garbage collector can corrupt memory while a page runs script. The sources do not say what an attacker can achieve beyond that.
first public Nov 10, 2026 · 1 source
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Who cares browser, firefox
160 or 153.7160 and Firefox ESR 153.7Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.
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