Debian/firefox-esr: critical 9.6
Sandbox escape due to use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Fire
Action: Upgrade firefox-esr to 153.4.0esr-1~deb13u1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 153.4.0esr-1~deb13u1 | - |
Fixed versions
| 153.4.0esr-1~deb13u1 |
Sources
- osv: DEBIAN-CVE-2026-100811#Debian:13/firefox-esr
- https://security-tracker.debian.org/tracker/CVE-2026-100811
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