CVE-2026-74937

HighCVSS 8.8/10Last modified Aug 19, 2026

Description

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

No affected versions have been published.

Timeline

Published: Aug 18, 2026
Last modified: Aug 19, 2026
NVD status: Analyzed

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