chessgames.com XSS vulnerability

Vulnerable URL: http://www.chessgames.com/perl/chess.pl?opening=B86-89=19233=Robert James Fischer playing the Sicilian Sozin=" Details: Description| Value ---|--- Patched:| No Latest check for patch:| 28.07.2017 Vulnerability type:| XSS Vulnerability status:| Publicly disclosed Alexa Rank| 19713...