HarborGuard / CVE
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CRITICALCVE-2026-6771Published Modified CNA mozilla

CVE-2026-6771: Mitigation bypass in the DOM: Security component

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Metrics

CVSS v3.1
9.8
Severity
CRITICAL
Fixed in
140.10
Affected Products
2

Fix available

140.10150
Affected packages
  • Mozilla / Firefox
    Fixed in 140.10, 150
  • Mozilla / Thunderbird
    Fixed in 140.10, 150
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References