Live › vulnerability › CVE-2026-117974
Go to dashboardA use-after-free bug in the XML component of Firefox can corrupt memory when a page triggers it. The sources do not say what an attacker can achieve beyond that, so the exact impact is unknown.
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, including managed desktops that pin an ESR branch. The sources do not say whether server-side or embedded uses of the XML component are affected.
No product ranges from the sources yet.
firefox --version.159 or later.115.44 or 153.6 on the ESR branch in use.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Use-after-free in the XML 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-2026-117974")
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