CVE-2026-16398

HighCVSS 7.5/10Last modified Oct 24, 2026

Description

Site isolation issue in the Graphics component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-200CWE-346

Affected software

No affected versions have been published.

Timeline

Published
Jul 21, 2026
Last modified
Oct 24, 2026
NVD status
Analyzed

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CVE-2026-16398: High severity, CVSS 7.5 | Vulnix