VDB
DEBIAN-CVE-2026-2778
DEBIAN-CVE-2026-2778
PUBLISHED
CVSS 10 CRITICAL
Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
Risk Scores
CVSS 3.1
10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | thunderbird | 1:128.7.0esr-1~deb11u1, 1:102.12.0-1~deb10u1, 1:102.12.0-1~deb12u1 |
| Debian:13 | firefox-esr | 140.3.1, 140.8.0, 140.8.0 |
| Debian:13 | thunderbird | 1:140.8.0esr-1~deb12u1, 1:140.7.1esr-1~deb13u1, 1:140.7.1esr-1 |
| Debian:11 | firefox-esr | 115.9.1esr-1~deb10u1, 0, 102.1.0esr-1 |
| Debian:11 | thunderbird | 1:140.2.0esr-1, 1:140.3.0esr-1, 1:140.3.0esr-1~deb11u1 |
| Debian:14 | thunderbird | 1:140.7.0esr-1~deb12u1, 1:128.14.0esr-1, 1:128.14.0esr-1~deb13u1 |
| Debian:12 | firefox-esr | 115.3.0, 115.2.1, 115.2.0 |
| Debian:14 | firefox-esr | 140.8.0, 140.8.0, 140.8.0 |
Exploit Intelligence
- mfsa2026-15.yml (github-poc)
Timeline
- Feb 24, 2026 CVE Published
- Apr 28, 2026 CVE Updated