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CVE-2026-74986

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CVSS 3.1
9.1 critical
EPSS
<1%p25
Published
()
Modified
Description

Site isolation issue in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

Vendors
mozilla
Products
firefox, thunderbird
Weakness
CWE-200
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
NVD CVE.org GitHub PoCs EPSS (0.3%)

In the news

No ingested article mentions this CVE yet.