SyGuestBook A5 Version 1.2 allows stored XSS because the isValidData function in include/functions.php does not properly block XSS payloads, as demonstrated by a crafted use of the onerror attribute of an IMG element.
5.4CVSS
5.2AI Score
0.001EPSS
SyGuestBook A5 Version 1.2 has no CSRF protection mechanism, as demonstrated by CSRF for an index.php?c=Administrator&a=update admin password change.
8.8CVSS
8.8AI Score
0.004EPSS
index.php?c=admin&a=index in SyGuestBook A5 Version 1.2 has stored XSS via a reply to a comment.
5.4CVSS
5.1AI Score
0.001EPSS