Language: JavaScript
Label: safe
CWE: CWE-352 \u2014 Cross-Site Request Forgery (CSRF)
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.

Code:
function sumInputs(input) {
    var sum = 0;

    $(input).each(function(){
        sum +=  $(this).val() === "" ? 0 : parseFloat( $(this).val() );
    });

    return sum;
}