Categories ⋅ Keywords ⋅ Packages Advisories for package 'lettre' May 14, 2026 CRITICAL RUSTSEC-2026-0141: Vulnerability in lettre TLS hostname verification disabled when using Boring TLS backend May 22, 2021 RUSTSEC-2021-0069: Vulnerability in lettre SMTP command injection in body November 11, 2020 MEDIUM RUSTSEC-2020-0069: Vulnerability in lettre Argument injection in sendmail transport