Language: Go
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:
func (tr *GetTagResp) GetExcerpt() {
	excerpt := strings.TrimSpace(tr.OriginalText)
	idx := strings.Index(excerpt, "\n")
	if idx >= 0 {
		excerpt = excerpt[0:idx]
	}
	tr.Excerpt = excerpt
}