CVE-2026-92238

CVE-2026-92238 affects Thunderbird , the Mozilla email client. The vulnerability involves ambiguous parsing of mail headers , where a maliciously constructed header could cause multiple fields to be parsed as a single field, or lead to potential memory safety violations . The issue was fixed in T...

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 and Thunderbird 140.16...