CVE-2026-16355

CVE-2026-16355: JIT miscompilation in the JavaScript Engine: JIT component

Published July 21, 2026
Last update July 22, 2026
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CVSS base score

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What the vulnerability does

01Description

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.

Key dates

02Disclosure timeline

July 21, 2026 CVE published
July 22, 2026 Record updated