VDB
DEBIAN-CVE-2026-2766
DEBIAN-CVE-2026-2766
PUBLISHED
CVSS 9.800000190734863 CRITICAL
Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
Risk Scores
CVSS 3.1
9.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | thunderbird | 115.11.0-1, 115.12.0-1, 115.12.0-1 |
| Debian:13 | thunderbird | 140.8.0, 140.8.0, 140.7.1 |
| Debian:11 | thunderbird | 128.14.0, 128.14.0, 128.14.0 |
| Debian:14 | firefox-esr | 140.7.0, 140.7.0, 140.7.0 |
| Debian:14 | thunderbird | 140.5.0, 140.5.0, 140.5.0 |
| Debian:13 | firefox-esr | 140.3.0, 140.3.0, 140.3.0 |
| Debian:11 | firefox-esr | *, *, * |
| Debian:12 | firefox-esr | 0, 102.12.0esr-1, 102.12.0esr-1~deb10u1 |
Exploit Intelligence
- mfsa2026-15.yml (github-poc)
Timeline
- Feb 24, 2026 CVE Published
- Apr 28, 2026 CVE Updated