Ultimate Bulletin Board stores data files in the cgi-bin directory, allowing remote attackers to view the data if an error occurs when the HTTP server attempts to execute the file.

Infopop Ultimate Bulletin Board (UBB) allows remote attackers to execute commands via shell metacharacters in the topic hidden field.

Cross-site scripting vulnerability in Infopop Ultimate Bulletin Board (UBB) before 5.47e allows remote attackers to steal user cookies via an [IMG] tag that references an about: URL with an onerror field.

Cross-site scripting vulnerability in Infopop Ultimate Bulletin Board (UBB) 6.2.0 Beta Release 1.0 allows remote attackers to execute arbitrary script and steal cookies via a message containing encoded Javascript in an IMG tag.

Infopop UBB.Threads 5.4 and Wired Community Software WWWThreads 5.0 through 5.0.9 allows remote attackers to upload arbitrary files by using a filename that contains an accepted extension, but ends in a different extension.

Cross-site scripting (XSS) vulnerability in Infopop Ultimate Bulletin Board (UBB) 6.x allows remote authenticated users to execute arbitrary web script and gain administrative access via the "displayed name" attribute of the "ubber" cookie.

SQL injection vulnerability in printthread.php in UBB.Threads allows remote attackers to execute arbitrary SQL commands via the main parameter.

Infopop Ultimate Bulletin Board up to v5.47a was discovered to allow all messages posted inside private forums to be disclosed by unauthenticated users via the quote reply feature.