The HTTP server in Node.js 0.10.x before 0.10.21 and 0.8.x before 0.8.26 allows remote attackers to cause a denial of service (memory and CPU consumption) by sending a large number of pipelined requests without reading the response.
https://kb.juniper.net/JSA10783
https://groups.google.com/forum/#%21topic/nodejs/NEbweYB0ei0
https://github.com/joyent/node/issues/6214
http://www.securityfocus.com/bid/63229
http://www.openwall.com/lists/oss-security/2013/10/20/1
http://rhn.redhat.com/errata/RHSA-2013-1842.html
http://lists.opensuse.org/opensuse-updates/2013-12/msg00051.html