CESS-2026-8956 — Vulnetix

CESS-2026-8956 PUBLISHED CVSS 9.8 CRITICAL

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

Risk Scores

CVSS 3.1

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Timeline

May 19, 2026 CVE Published

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