Node.js 0.8 before 0.8.28 and 0.10 before 0.10.30 does not consider the possibility of recursive processing that triggers V8 garbage collection in conjunction with a V8 interrupt, which allows remote attackers to cause a denial of service (memory corruption and application crash) via deep JSON objects whose parsing lets this interrupt mask an overflow of the program stack.
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.
The Update method in src/node_http_parser.cc in Node.js before 0.6.17 and 0.7 before 0.7.8 does not properly check the length of a string, which allows remote attackers to obtain sensitive information (request header contents) and possibly spoof HTTP headers via a zero length string.