critical9.8
CVE-2026-92238
A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations.
Impact
A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Thunderbird | before 140.16.0 from 141.0 before 153.3.0 from 154.0 before 156.0 |