Vulnerability Details CVE-2019-18873
FUDForum 3.0.9 is vulnerable to Stored XSS via the User-Agent HTTP header. This may result in remote code execution. An attacker can use a user account to fully compromise the system via a GET request. When the admin visits user information under "User Manager" in the control panel, the payload will execute. This will allow for PHP files to be written to the web root, and for code to execute on the remote server. The problem is in admsession.php and admuser.php.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.034
EPSS Ranking 87.0%
CVSS Severity
CVSS v3 Score 9.0
CVSS v2 Score 8.5
References