CVE-2002-1575: Undefined Security Weakness

cgiemail allows remote attackers to use cgiemail as a spam proxy via CRLF injection of encoded newline %0a characters in parameters such as "required-subject," which can be used to modify the CC, BCC, and other header fields in the generated email message...

security flaw

The mail function in PHP 4.x to 4.2.2 does not filter ASCII control characters from its arguments, which could allow remote attackers to modify mail message content, including mail headers, and possibly use PHP as a "spam proxy."...

CVE-2002-0490

Instant Web Mail before 0.60 does not properly filter CR/LF sequences, which allows remote attackers to 1 execute arbitrary POP commands via the id parameter in message.php, or 2 modify certain mail message headers via numerous parameters in write.php...