Debian/thunderbird: high 8
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
Action: Upgrade thunderbird to 1:140.7.0esr-1~deb12u1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1:140.7.0esr-1~deb12u1 | - |
Fixed versions
| 1:140.7.0esr-1~deb12u1 |
Sources
- osv: DEBIAN-CVE-2026-0878#Debian:12/thunderbird
- https://security-tracker.debian.org/tracker/CVE-2026-0878
published · modified · JSON