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[Navigation API] Fix cross-origin leak of sourceElement. #59263

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Merged
chromium-wpt-export-bot merged 1 commit into from
Apr 16, 2026
+33 −0
Merged

[Navigation API] Fix cross-origin leak of sourceElement. #59263

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13 changes: 13 additions & 0 deletions navigation-api/navigate-event/resources/echo-sourceElement.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
<!doctype html>
<script>
navigation.onnavigate = e => {
if (e.destination.url.includes("#test")) {
window.parent.postMessage({
type: "result",
sourceElementIsNull: e.sourceElement === null,
sourceElementName: e.sourceElement ? e.sourceElement.tagName : "null"
}, "*");
}
};
window.parent.postMessage({ type: "ready" }, "*");
</script>
20 changes: 20 additions & 0 deletions navigation-api/navigate-event/sourceElement-cross-origin.sub.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,20 @@
<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe id="theFrame" name="theFrame" src="http://{{domains[www1]}}:{{ports[http][0]}}/navigation-api/navigate-event/resources/echo-sourceElement.html"></iframe>
<script>
async_test(t => {
window.addEventListener("message", t.step_func(e => {
if (e.data.type === "ready") {
const a = document.createElement("a");
a.href = document.getElementById("theFrame").src + "#test";
a.target = "theFrame";
document.body.appendChild(a);
a.click();
} else if (e.data.type === "result") {
assert_true(e.data.sourceElementIsNull, "sourceElement must be null for cross-origin initiators (it was " + e.data.sourceElementName + ")");
t.done();
}
}));
}, "NavigateEvent.sourceElement should be null for cross-origin same-document initiators");
</script>
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