Multiple unspecified vulnerabilities in YaCy before 0.61 have unknown impact and attack vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/45769
http://www.securityfocus.com/bid/31657
http://secunia.com/advisories/32159
http://freshmeat.net/projects/yacy/?branch_id=51198&release_id=286006