This indicates an attack attempt against a Cross-Site Scripting vulnerability in IBM Infosphere BigInsights.
The vulnerability is caused by improper validation of user-supplied input. A remote attacker could exploit it using a specially-crafted URL to execute script in a victim's Web browser to steal a victim's cookie-based authentication credentials.
IBM BigInsights 4.1, 4.2
System Compromise : Remote attackers can execute arbitrary script code within the context of the target user's browser
Apply the most recent upgrade or patch from the vendor.