CVE-2026-92238

A maliciously constructed mail header in Mozilla Thunderbird could cause multiple fields to be parsed as one or lead to memory safety violations . This vulnerability has been addressed in Thunderbird versions 156 , 140.16 , and 153.3 . For Debian users, the issue is resolved in versions 1:140.16....

CVE-2026-92238 Ambiguous parsing of mail headers

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...