CVE-2026-100804

critical · 9.6

Sandbox escape due to use-after-free in the Preferences: Backend component. This vulnerability was fixed in Firefox 157.

9.6

CVSS

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EPSS (exploit prob.)

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EPSS percentile

2026-09-29

Published

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

Weaknesses

CWE-416

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-100804