Live › vulnerability › CVE-2026-117916
Go to dashboardA use-after-free bug in the XSLT component of Firefox was fixed in Firefox 159 and Firefox ESR 153.6. Use-after-free flaws can let a crafted page corrupt memory and may allow an attacker to run code in the browser.
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 is potentially exposed, since the flaw is in the browser's XSLT processing and is triggered by visiting content. The sources do not say which configurations or builds are affected beyond that, so unknown for narrower scope.
No product ranges from the sources yet.
firefox --version.159 or later.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 XSLT component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.
This page as .md · .json · in your agent: get_signal("CVE-2026-117916")
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