Live › vulnerability › CVE-2026-117898
Go to dashboardA use-after-free bug in the JIT component of Firefox's JavaScript engine lets memory be reused after it is freed. The sources do not say what an attacker can achieve with it beyond that.
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 older than the fixed versions, including desktop browsers used on managed endpoints. The sources do not say whether specific configurations or settings change exposure.
No product ranges from the sources yet.
firefox --version159 and ESR 153.6159 or later153.6 or laterEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.
This page as .md · .json · in your agent: get_signal("CVE-2026-117898")
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