Live › vulnerability › CVE-2026-117904
Go to dashboardA use-after-free bug in the JavaScript garbage collector of Firefox can corrupt memory when the browser runs crafted script. The sources say it was fixed in Firefox 159 and Firefox ESR 153.6, but do not describe the attacker's exact outcome.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-27 14:32 UTC. All times on this page are UTC.
Anyone running Firefox or Firefox ESR builds older than the fixed versions on desktops or servers where the browser loads web content. The sources do not say which configurations are affected beyond that; headless or managed deployments that never load untrusted pages are likely lower risk, but this is not stated in the sources.
No product ranges from the sources yet.
firefox --version, and compare it to 159 or 153.6 for ESR.159 or later, or Firefox ESR to 153.6 or later.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.
This page as .md · .json · in your agent: get_signal("CVE-2026-117904")
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