Security: jQuery ajaxConvert cross-domain script mitigation (CVE-2015-9251)

Backport upstream jQuery gh-2432 logic in bundled DataTables/jQuery:
skip inferred script conversion for cross-domain ajax responses.

Refs: 2546bb35b8
Made-with: Cursor

front/lib/datatables/datatables.js

@@ -9059,6 +9059,11 @@ function ajaxConvert( s, response, jqXHR, isSuccess ) {
 			// Convert response if prev dataType is non-auto and differs from current
 			} else if ( prev !== "*" && prev !== current ) {
 
+				// Mitigate possible XSS vulnerability (gh-2432)
+				if ( s.crossDomain && current === "script" ) {
+					continue;
+				}
+
 				// Seek a direct converter
 				conv = converters[ prev + " " + current ] || converters[ "* " + current ];