Live › vulnerability › CVE-2026-117959
Go to dashboardA site isolation weakness in the Service Workers component of Firefox's DOM was fixed in Firefox 159 and Firefox ESR 153.6. The sources do not describe what an attacker can read or run through it.
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 a Firefox release older than 159 or a Firefox ESR build older than 153.6. The sources do not say whether any server-side or managed deployment is exposed beyond the browser itself.
No product ranges from the sources yet.
firefox --version153.6159 or later153.6 or laterEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
Site isolation issue in the DOM: Service Workers component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.
This page as .md · .json · in your agent: get_signal("CVE-2026-117959")
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