CVE-2026-8389

CVE-2026-8389: JIT miscompilation in the JavaScript Engine: JIT component

Published May 12, 2026
Last update June 5, 2026
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CVSS base score

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What the vulnerability does

Description

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3.

Key dates

Disclosure timeline

May 12, 2026 CVE published
June 5, 2026 Record updated