Live › vulnerability › CVE-2026-117888
Go to dashboardFirefox's Canvas2D graphics component reads memory that was never initialized, which can leak or corrupt data in the browser process. Sources do not say whether an attacker can turn this into code execution or a page-only leak.
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 desktop installs and managed fleets. The sources do not say whether a web page alone can trigger the flaw or whether a special setting is needed. Teams that only use other browsers or already run the fixed releases can skip it.
No product ranges from the sources yet.
firefox --version (or check About Firefox) and compare against the fixed versions 159 and 153.6 for ESR159 or later, or Firefox ESR to 153.6 or laterEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
Uninitialized memory in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.
This page as .md · .json · in your agent: get_signal("CVE-2026-117888")
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