medium6.5
CVE-2026-3889
Spoofing issue in Thunderbird.
Impact
Spoofing issue in Thunderbird. This vulnerability was fixed in Thunderbird 149 and Thunderbird 140.9.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Thunderbird | before 140.9.0 before 149.0 |