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 0.003
EPSS Ranking 56.2%