Language: JavaScript
Label: vulnerable
CWE: CWE-79 \u2014 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Code:
function checkInput(){var child=pasteCatcher.childNodes[0];if(child){if(child.tagName==='IMG'){createImage(child.src)}}
pasteCatcher.innerHTML=''}