Debian/thunderbird: critical 10
Sandbox escape in the Graphics: WebRender component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
Action: Upgrade thunderbird to 1:140.8.0esr-1~deb13u1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1:140.8.0esr-1~deb13u1 | - |
Fixed versions
| 1:140.8.0esr-1~deb13u1 |
Sources
- osv: DEBIAN-CVE-2026-2761#Debian:13/thunderbird
- https://security-tracker.debian.org/tracker/CVE-2026-2761
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