Polipo before 1.0.2 allows remote HTTP servers to cause a denial of service (daemon crash) by aborting the response to a POST request.
https://exchange.xforce.ibmcloud.com/vulnerabilities/36268
http://www.vupen.com/english/advisories/2007/2973
http://www.pps.jussieu.fr/~jch/software/polipo/CHANGES.text