CVE-2026-8401
published 2026-05-12CVE-2026-8401: Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.
critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 150.0.3 | Firefox 150.0.3 |
| mozilla | firefox | < 150.0.3 | 150.0.3 |
| mozilla | firefox | — | — |
| mozilla | firefox_esr | < Firefox ESR 140.11 | Firefox ESR 140.11 |
| mozilla | firefox_esr | < Firefox ESR 115.36 | Firefox ESR 115.36 |
| mozilla | thunderbird | < Thunderbird 140.11 | Thunderbird 140.11 |
| rhel10 | firefox-flatpak | — | — |