VDB
DEBIAN-CVE-2026-6771
DEBIAN-CVE-2026-6771
PUBLISHED
CVSS 9.800000190734863 CRITICAL
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
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:13 | thunderbird | 0, 140.9.1, 140.9.1 |
| Debian:12 | thunderbird | 1:128.2.3esr-1, *, * |
| Debian:13 | firefox-esr | 0, 140.9.1, 140.9.1 |
| Debian:11 | firefox-esr | 128.12.0esr-1, 0, 102.1.0esr-1 |
| Debian:11 | thunderbird | *, 1:91.7.0-1, 1:91.7.0-2 |
| Debian:14 | firefox-esr | *, *, * |
| Debian:12 | firefox-esr | 102.15.1, 128.10.1, 128.10.1 |
| Debian:14 | thunderbird | 140.9.1, 140.9.1, 140.9.1 |
Exploit Intelligence
- mfsa2026-30.yml (github-poc)
- mfsa2026-34.yml (github-poc)
- 2026-04-29_417_firefox-esr.yaml (github-poc)
- 2026.xml (github-poc)
- blog-045.ts (github-poc)
Timeline
- Apr 21, 2026 CVE Published
- Apr 28, 2026 CVE Updated