Debian/firefox-esr: critical 9.8
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.
Action: Upgrade firefox-esr to 140.11.0esr-1~deb13u1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 140.11.0esr-1~deb13u1 | - |
Fixed versions
| 140.11.0esr-1~deb13u1 |
Sources
- osv: DEBIAN-CVE-2026-8401#Debian:13/firefox-esr
- https://security-tracker.debian.org/tracker/CVE-2026-8401
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