The type of attack was most likely attempted against the application is an XSS attack.
This attack is known to be an example of an XSS attack as it is one that is often recorded by the log of a web server's log.
Conclusively, Note that in this attack, if you see the HTML encoding, one can say that is mainly an XSS attack but when you see SQL or XML statements in the string, then it is another.
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