CVE-2026-124927 · Other
NO FIX YET · SEE WHAT TO DO
A site isolation flaw in Firefox's WebRender graphics component can let content from one website cross into another site's context. The sources do not describe the exact attacker capability beyond this.
first public Nov 10, 2026 · 1 source
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Anyone running Firefox or Firefox ESR older than the fixed versions named in the sources. The sources do not state the exact trigger or whether any special setting is needed.
Not affected if firefox-160-or-later, firefox-esr-153.7-or-later
Who cares browsers, firefox
about:support or the Help menu; the sources name Firefox 160 and Firefox ESR 153.7 as fixed.160 or later153.7 or laterSite isolation issue in the Graphics: WebRender component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.
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