Live › vulnerability › CVE-2026-117954
Go to dashboardA use-after-free bug in the Layout: Positioned component of Firefox lets memory be reused after it is freed. Sources do not say what an attacker gets beyond that, and no severity is given.
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 desktop or ESR builds of Firefox older than the fixed versions is exposed. Servers and teams that do not run Firefox, or that run only patched builds, can skip it. unknown for whether the flaw is reachable through web content.
No product ranges from the sources yet.
firefox --versionfirefox --version against the ESR branch in use159 or later115.44 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 Layout: Positioned component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, and Firefox ESR 153.6.
This page as .md · .json · in your agent: get_signal("CVE-2026-117954")
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