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CVE-2026-74960

—
CVSS 3.1
8.1 high
EPSS
<1%p6
Published
()
Modified
Description

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.

Vendors
mozilla
Products
firefox, thunderbird
Weakness
CWE-284, CWE-346
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
NVD CVE.org GitHub PoCs EPSS (0.2%)

In the news

No ingested article mentions this CVE yet.