Live › vulnerability › CVE-2026-117990
Go to dashboardFirefox's WebRender graphics component has incorrect boundary conditions that let a crafted page escape the browser sandbox. The fix shipped in Firefox 159 and Firefox ESR 153.6.
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 159 or 153.6 is exposed, since the flaw sits in the browser's rendering path that handles web content. Teams that only use Firefox on managed machines with auto-update enabled are likely already patched, and servers without a browser can skip it.
No product ranges from the sources yet.
firefox --version (or check About Firefox) and compare against 159 or ESR 153.6153.6159 or later153.6 or laterEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.
This page as .md · .json · in your agent: get_signal("CVE-2026-117990")
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