signs.pl XSS vulnerability

Vulnerable URL: https://www.signs.pl/search.php?author==0=13'"9==0==50=rynek=0=1&dat1;=&dat2;= Details: Description| Value ---|--- Patched:| No Latest check for patch:| 03.01.2018 Vulnerability type:| XSS Vulnerability status:| Publicly disclosed Alexa Rank| 302921 VIP website status:| No...