CVE-2006-5313: Hastymail

Medium severity, CVSS 6.5. EPSS: 1.4% chance of exploitation in the next 30 days.

Hastymail 1.5 and earlier before 20061008 allows remote authenticated users to send arbitrary SMTP commands by placing them after a CRLF.CRLF sequence in the smtp_message parameter. NOTE: this crosses privilege boundaries if the SMTP server configuration prevents a user from establishing a direct SMTP session. NOTE: this is a different type of issue than CVE-2006-5262.

Affected products

• Hastymail Hastymail: up to and including 1.5; version 1.0.1 only; version 1.0.2 only; version 1.1 only; version 1.2 only

Published 2006-10-17. Last modified 2026-06-16.