Postnuke Software Foundation : Security Vulnerabilities, CVEs, Published In February 2006 (XSS)

Cross-site scripting (XSS) vulnerability in the NS-Languages module for PostNuke 0.761 and earlier, when magic_quotes_gpc is enabled, allows remote attackers to inject arbitrary web script or HTML via the language parameter in a missing or translation operation.

Interpretation conflict in PostNuke 0.761 and earlier allows remote attackers to conduct cross-site scripting (XSS) attacks via HTML tags with a trailing "<" character, which is interpreted as a ">" character by some web browsers but bypasses the blacklist protection in (1) the pnVarCleanFromInput function in pnAPI.php, (2) the pnSecureInput function in pnAntiCracker.php, and (3) the htmltext parameter in an edituser operation to user.php.