CVE-2026-12302

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-693

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-2026-12302: Medium severity, CVSS 6.5 | Vulnix