VULNERABILITY INTELLIGENCE

CVE-2026-109783

CVSS score8.3 HIGH

EPSS probability0.27%

CISA KEVNot currently listed

Published2026-10-13

Last modified2026-10-26

CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Description

Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox ESR 153.5 and Thunderbird 153.5.