9.8

CVE-2026-84140

Site isolation issue in the DOM: Navigation component

Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Mozilla ≫ Firefox Version < 153.2.0
Mozilla ≫ Firefox Version >= 154.0.0 < 155.0.0
Mozilla ≫ Thunderbird Version < 153.2.0
Mozilla ≫ Thunderbird Version >= 154.0 < 155.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.14% 0.04
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA-ADP 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-346 Origin Validation Error

The product does not properly verify that the source of data or communication is valid.

https://www.mozilla.org/security/advisories/mfsa2026-82/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-85/
Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=2063780
Issue Tracking
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-86/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-88/
Vendor Advisory