CVE-2026-4686

HighCVSS 7.5/10Last modified Jul 15, 2026

Description

Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Metrics

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

Weakness enumeration

CWE-754CWE-787

Affected software

No affected versions have been published.

Timeline

Published
Mar 24, 2026
Last modified
Jul 15, 2026
NVD status
Modified

Related CVEs from 2026

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CVE-2026-4686: High severity, CVSS 7.5 | Vulnix