Multiple cross-site scripting (XSS) vulnerabilities in gb.cgi in MRCGIGUY (MCG) Guestbook 1.0 allow remote attackers to inject arbitrary web script or HTML via the (1) name, (2) email, (3) website, and (4) message parameters.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.011
EPSS Ranking 62.2%