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4 changes: 4 additions & 0 deletions test.js
Original file line number Diff line number Diff line change
@@ -1,3 +1,7 @@
function hello_world() {
alert("Hello world")
}

this.addEventListener('message', function(event) {
document.write(event.data); // NOT OK

Check warning

Code scanning / CodeQL

Client-side cross-site scripting

Cross-site scripting vulnerability due to [user-provided value](1).
})