8.1

CVE-2026-74960

Site isolation issue in the WebExtensions component

Site isolation issue in the WebExtensions component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Mozilla ≫ Firefox Version < 140.14.0
Mozilla ≫ Firefox Version >= 141.0 < 153.1.0
Mozilla ≫ Thunderbird Version < 140.14.0
Mozilla ≫ Thunderbird Version >= 141.0 < 153.1.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.053
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
CISA-ADP 8.1 2.8 5.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CWE-284 Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

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/mfsa2026-74/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-76/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-77/
Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=2049148
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-78/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-79/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-80/
Vendor Advisory