CRLF injection vulnerability in viewcvs in ViewCVS 0.9.2 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the content-type parameter.
http://www.securityfocus.com/archive/1/461382/100/0/threaded
http://lists.grok.org.uk/pipermail/full-disclosure/2005-January/030514.html