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CVE-2026-0877

Mitigation bypass in the DOM: Security component

CVSS 8.1 HIGHEPSS 0.3%CWE-693
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Productos afectados
Mozilla · FirefoxMozilla · Thunderbird

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Referencias
https://bugzilla.mozilla.org/show_bug.cgi?id=1999257https://www.mozilla.org/security/advisories/mfsa2026-01/https://www.mozilla.org/security/advisories/mfsa2026-02/https://www.mozilla.org/security/advisories/mfsa2026-03/https://www.mozilla.org/security/advisories/mfsa2026-04/https://www.mozilla.org/security/advisories/mfsa2026-05/