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CVE-2026-4692

Sandbox escape in the Responsive Design Mode component

CVSS 9.6 CRITICALEPSS 0.4%
Sandbox escape in the Responsive Design Mode component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Produtos afetados
Mozilla · FirefoxMozilla · Thunderbird

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Referências
https://bugzilla.mozilla.org/show_bug.cgi?id=2017643https://www.mozilla.org/security/advisories/mfsa2026-20/https://www.mozilla.org/security/advisories/mfsa2026-21/https://www.mozilla.org/security/advisories/mfsa2026-22/https://www.mozilla.org/security/advisories/mfsa2026-23/https://www.mozilla.org/security/advisories/mfsa2026-24/