CVE-2026-8390

CVE-2026-8390: Use-after-free in the JavaScript: WebAssembly component

Published May 12, 2026
Last update June 30, 2026
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CVSS base score

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What the vulnerability does

01Description

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.

Key dates

02Disclosure timeline

May 12, 2026 CVE published
June 30, 2026 Record updated