VDB
DEBIAN-CVE-2026-0878
DEBIAN-CVE-2026-0878
PUBLISHED
CVSS 8 HIGH
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.
Risk Scores
CVSS v3.1
8
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:11 | thunderbird | 102.12.0-1, 1:91.13.0-1~deb10u1, 1:91.13.0-1~deb11u1 |
| Debian:14 | firefox-esr | 0, 128.13.0esr-1, 128.14.0esr-1 |
| Debian:14 | thunderbird | 140.6.0, *, * |
| Debian:12 | thunderbird | 128.14.0, 128.14.0, 128.14.0 |
| Debian:13 | firefox-esr | 0, 128.13.0esr-1, 128.14.0esr-1~deb11u1 |
| Debian:12 | firefox-esr | *, 0, 102.11.0esr-1 |
| Debian:11 | firefox-esr | 115.14.0, 115.15.0, 115.15.0 |
| Debian:13 | thunderbird | 140.6.0, 140.6.0, 140.5.0 |
Timeline
- Jan 13, 2026 CVE Published
- Apr 28, 2026 CVE Updated