CVE-2026-2797

CVE-2026-2797: Use-after-free in the JavaScript: GC component

Published February 24, 2026
Last update July 15, 2026
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CVSS base score

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What the vulnerability does

01Description

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

Key dates

02Disclosure timeline

February 24, 2026 CVE published
July 15, 2026 Record updated