CVE-2026-12321

MediumCVSS 5.4/10Last modified Jun 17, 2026

Description

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-670

Affected software

No affected versions have been published.

Timeline

Published
Jun 16, 2026
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2026-12321: Medium severity, CVSS 5.4 | Vulnix