CRLF injection vulnerability in (1) include/inc_act/act_formmailer.php and possibly (2) sample_ext_php/mail_file_form.php in phpwcms 1.2.5-DEV and earlier, and 1.1 before RC4, allows remote attackers to modify HTTP headers and send spam e-mail via a spoofed HTTP Referer (HTTP_REFERER).
https://exchange.xforce.ibmcloud.com/vulnerabilities/26130
http://www.vupen.com/english/advisories/2006/1556