Live › vulnerability › CVE-2026-117966
Go to dashboardMozilla fixed a site isolation issue in the Networking HTTP component of Firefox in versions 159, ESR 115.44 and ESR 153.6. The sources do not describe what an attacker can read or do 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.
No product ranges from the sources yet.
firefox --version or check Help > About Firefox and compare against 159, 115.44 (ESR) or 153.6 (ESR)159, or ESR to 115.44 or 153.6Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Site isolation issue in the Networking: HTTP 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-2026-117966")
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