Hi @vikas50
There's a certified application on the ServiceNow Store.
Ref: Onapsis Vulnerability Integration
Installation Guide: OP ServiceNow Integration Guide 1.2.2.pdf
Since the Support Contact is "support@onapsis.com", the app was most probably built by the Onapsis team.
Moreover, the application is Free. So you can install it to the client Sand-box instance to test it and review how it is implemented, in order to apply to your context or just go ahead and leverage the app.
Cheers,
Tai Vu
