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CVE-2026-8956

—
CVSS 3.1
9.8 critical
EPSS
<1%p47
Published
()
Modified
Description

Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

Vendors
mozilla
Products
firefox, thunderbird
Weakness
CWE-190
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD CVE.org GitHub PoCs EPSS (0.6%)

In the news

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