Live › vulnerability › CVE-2026-117994
Go to dashboardA use-after-free bug in the JavaScript garbage collector of Firefox can corrupt memory when the engine runs crafted code. The sources do not say what an attacker can gain beyond memory corruption, and the fix ships in Firefox 159 and Firefox ESR 153.6.
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 159 or 153.6 is affected. The sources do not say which platforms or configurations are most exposed, and they do not say whether embedded uses of the Gecko engine are included.
No product ranges from the sources yet.
firefox --version, and compare it with 159 and 153.6 (ESR)159 or Firefox ESR to 153.6Each 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-2026-117994")
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