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Vulnerability record · CVE-2006-0800 · published 20 February 2006

CVE-2006-0800: Postnuke software foundation postnuke cross-site scripting vulnerability

PPostnuke Software Foundation · Postnuke

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.

2.6 CVSS 2.0 Low EPSS 2.2% · top 18.4% CWE-79 · Cross-site scripting
2.6CVSS 2.0 base score
2.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:H/Au:N/C:N/I:P/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://archives.neohapsis.com/archives/fulldisclosure/2006-02/0469.html
http://news.postnuke.com/index.php?name=News&file=article&sid=2754 Patch
http://secunia.com/advisories/18937 PatchVendor Advisory
http://securityreason.com/securityalert/454
http://www.securityfocus.com/bid/16752 ExploitPatch
http://www.vupen.com/english/advisories/2006/0673 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/24823
http://archives.neohapsis.com/archives/fulldisclosure/2006-02/0469.html
http://news.postnuke.com/index.php?name=News&file=article&sid=2754 Patch
http://secunia.com/advisories/18937 PatchVendor Advisory
http://securityreason.com/securityalert/454
http://www.securityfocus.com/bid/16752 ExploitPatch
http://www.vupen.com/english/advisories/2006/0673 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/24823

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2007-0386Postnuke software foundation postnuke vulnerabilityUnspecified vulnerability in the rating section in PostNuke 0.764 has unknown impact and attack vectors, related to "an interesting bug."EPSS 1.5%7.8CVE-2007-0385Postnuke software foundation postnuke vulnerabilityThe faq section in PostNuke 0.764 allows remote attackers to obtain sensitive information (the full path) via "unvalidated output" in FAQ/index.php, …EPSS 1.5%7.8CVE-2006-6267Postnuke software foundation postnuke vulnerabilityPostNuke 0.7.5.0, and certain minor versions, allows remote attackers to obtain sensitive information via a non-numeric value of the stop parameter, …EPSS 1.4%7.5CVE-2006-6233Postnuke software foundation postnuke vulnerabilitySQL injection vulnerability in the Downloads module for unknown versions of PostNuke allows remote attackers to execute arbitrary SQL commands via th…EPSS 1.1%7.5CVE-2006-5733Postnuke software foundation postnuke vulnerabilityDirectory traversal vulnerability in error.php in PostNuke 0.763 and earlier allows remote attackers to include and execute arbitrary local files via…EPSS 3.0%7.5CVE-2006-5121Postnuke software foundation postnuke vulnerabilitySQL injection vulnerability in modules/Downloads/admin.php in the Admin section of PostNuke 0.762 allows remote attackers to execute arbitrary SQL co…EPSS 1.4%7.5CVE-2006-0146John lim adodb sql injection vulnerabilityThe server.php test script in ADOdb for PHP before 4.70, as used in multiple products including (1) Mantis, (2) PostNuke, (3) Moodle, (4) Cacti, (5) …EPSS 13%7.5CVE-2006-0147John lim adodb vulnerabilityDynamic code evaluation vulnerability in tests/tmssql.php test script in ADOdb for PHP before 4.70, as used in multiple products including (1) Mantis…EPSS 13%

Source: NIST National Vulnerability Database (record CVE-2006-0800), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.