Detections
Analytics

CVE-2026-109783

high

Description

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

References

https://www.mozilla.org/security/advisories/mfsa2026-110/

https://www.mozilla.org/security/advisories/mfsa2026-108/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-98543

https://bugzilla.mozilla.org/show_bug.cgi?id=2075533

Details

Source: Mitre, NVD

Published: 2026-10-13

Updated: 2026-10-26

Named Vulnerability: GHSA-cfhh-2xg5-mwjh

Risk Information

CVSS v2

Base Score: 7.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.3

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

Severity: High

EPSS

EPSS: 0.00273