A vulnerability in the Graphite service of Cisco HyperFlex software could allow an unauthenticated, remote malicious user to retrieve data from the Graphite service. The vulnerability is due to insufficient authentication controls. An attacker could exploit this vulnerability by sending crafted requests to the Graphite service. A successful exploit could allow the malicious user to retrieve any statistics from the Graphite service. Versions before 3.5(2a) are affected.