VDB
DEBIAN-CVE-2025-6429
DEBIAN-CVE-2025-6429
PUBLISHED
CVSS 6.5 MEDIUM
Firefox could have incorrectly parsed a URL and rewritten it to the youtube.com domain when parsing the URL specified in an `embed` tag. This could have bypassed website security checks that restricted which domains users were allowed to embed. This vulnerability was fixed in Firefox 140, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12.
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | thunderbird | 125.0, 127.0, 128.0 |
| Debian:13 | firefox-esr | 0, 0 |
| Debian:14 | thunderbird | 0, 0 |
| Debian:11 | thunderbird | 102.4.0-1, 102.4.1-1, 102.5.0-1 |
| Debian:12 | firefox-esr | *, *, * |
| Debian:13 | thunderbird | 0, 0 |
| Debian:14 | firefox-esr | 0, 0 |
| Debian:11 | firefox-esr | 102.9.0, 102.9.0, 102.9.0 |
Timeline
- Jun 24, 2025 CVE Published
- Apr 28, 2026 CVE Updated