Which web applications vulnerability did the analyst discover?

A security analyst in an insurance company is assigned to test a new web application that will be
used by clients to help them choose and apply for an insurance plan. The analyst discovers that
the application is developed in ASP scripting language and it uses MSSQL as a database
backend. The analyst locates the application’s search form and introduces the following code in
the search input fielD.
IMG SRC=vbscript:msgbox(“Vulnerable”);> originalAttribute=”SRC”
originalPath=”vbscript:msgbox(“Vulnerable”);>”
When the analyst submits the form, the browser returns a pop-up window that says “Vulnerable”.
Which web applications vulnerability did the analyst discover?

A.
Cross-site request forgery

B.
Command injection

C.
Cross-site scripting

D.
SQL injection