Vulnerability found:

14 June 2007

Severity level:



Adrian Pastor of ProCheckUk. ProCheckUp thanks Tincan for fixing this vulnerability so promptly.


Webbler CMS is vulnerable to XSS within the " /uploader/index.php" server-side script

and 'login' parameter.
No authentication is required to exploit this vulnerability.


An attacker may be able to cause execution of malicious scripting code in the browser of a

user who clicks on a link to a site generated/managed by Webbler CMS. HTML tags can also

be injected.
This type of attack can result in non-persistent defacement of the target site, or the redirection

of confidential information to unauthorised third parties.


The version number is usually included within 'meta' HTML tags and 'X-Powered-By'

HTTP response headers. i.e. -
<meta name="generator" content="webbler 3.1.3 -" />
X-Powered-By: webbler version 3.1.3

Successfully tested on

Server environment -

Webbler CMS 3.1.3

PHP 5.1.6

Apache web server (unknown version)

Client environment -

Microsoft Internet Explorer 7.0.5730.11

Proof of concept:

This vulnerability can only be exploited as a POST request, so the attacker must convince
the victim to visit a third-party site which causes the victim's browser to submit
the POST XSS request to the vulnerable site. This can be accomplished through a hidden '<form>'
with a 'method="post"' attribute.
The following curl command can be used to test if a site is vulnerable:
curl -s "" -d "login=\"><script>alert(\"XSS\")</SCRIPT>&password=test&processlogin=Enter&forgotpassword="

How to fix:

This issue has been fixed on version version 3.1.6.



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