CVE-2006-0800: Postnuke Software Foundation Postnuke

Low severity, CVSS 2.6. EPSS: 2.2% chance of exploitation in the next 30 days.

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.

Affected products

• Postnuke Software Foundation Postnuke: version 0.7 only; version 0.62 only; version 0.63 only; version 0.64 only; version 0.70 only; version 0.71 only; …

Published 2006-02-20. Last modified 2026-06-16.