CVE-2026-100832High· 8.8▾ TwilightUse-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox ESR 153.4, Firefox ESR 115.42, and Firefox ESR 140.17.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox ESR 153.4, Firefox ESR 115.42, and Firefox ESR 140.17.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-100797High· 8.8Privilege escalation due to use-after-free in the Graphics: WebRender component
CVE-2026-100821NoneSite isolation issue in the Panning and Zooming component
CVE-2026-100819Critical· 9.6Sandbox escape due to incorrect boundary conditions in the XPCOM component
CVE-2026-100818Critical· 9.6Sandbox escape due to use-after-free in the Widget: Gtk component
CVE-2026-100803NoneSame-origin policy bypass in the WebExtensions component
CVE-2026-100791NoneUse-after-free in the DOM: Core & HTML component