VDB
DEBIAN-CVE-2026-4686
DEBIAN-CVE-2026-4686
PUBLISHED
CVSS 7.5 HIGH
Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:11 | firefox-esr | 115.12.0esr-1~deb10u1, 102.3.0, 102.3.0 |
| Debian:12 | firefox-esr | 128.4.0esr-1~deb12u1, 115.13.0, 115.12.0 |
| Debian:14 | thunderbird | 0, 1:128.14.0esr-1, 1:128.14.0esr-1~deb11u1 |
| Debian:12 | thunderbird | 1:102.11.0-1, 1:102.12.0-1, 1:102.12.0-1~deb11u1 |
| Debian:14 | firefox-esr | 140.9.0, 140.9.0, 140.9.0 |
| Debian:13 | thunderbird | 0, 1:140.4.0esr-1~deb12u1, 140.6.0 |
| Debian:13 | firefox-esr | 140.8.0, 140.8.0, 140.8.0 |
| Debian:11 | thunderbird | 102.6.0-1, 102.6.0-1, 102.5.1-1 |
Exploit Intelligence
- mfsa2026-23.yml (github-poc)
- 2026.xml (github-poc)
Timeline
- Mar 24, 2026 CVE Published
- Apr 28, 2026 CVE Updated