Multiple HTTP Response Splitting vulnerabilities in (1) toggleshow.php, (2) togglecats.php, and (3) showprofile.php in Infopop UBB.Threads before 6.5.2 Beta allow remote attackers to spoof web content and poison web caches via CRLF ("%0d%0a") sequences in the Cat parameter.
Infopop UBB.Threads before 6.5.2 Beta allows remote attackers to include arbitrary files via the language parameter in a cookie followed by a null (%00) byte.
Cross-site scripting (XSS) vulnerability in showflat.php in Infopop UBB.Threads before 6.5 allows remote attackers to inject arbitrary web script or HTML via the Cat parameter.