Information------------------
Name : XSS vulnerability in TWikiSoftware
Versions: TWiki 5.0.2 and below.
Vendor Homepage: http://twiki.org/
Vulnerability Type : Cross-Site Scripting
Severity : High
Researcher : Mesut Timur <mesut [at] mavitunasecurity [dot] com>
Advisory Reference :  NS-11-006
CVE :  CVE-2011-3010

Description-----------------------------------
TWiki® is a flexible, powerful, and easy to use enterprise wiki,enterprise collaboration platform, and web application platform. It isa Structured Wiki, typically used to run a project development space,a document management system, a knowledge base, or any other groupwaretool, on an intranet, extranet or the Internet.

Details-----------------------------------
TTWiki is affected by XSS vulnerabilities in version 5.0.2.Example PoC url is as follows :
http://example.com/do/view/Main/Jump?create=on&newtopic=%27%22--%3E%3C/style%3E%3C/script%3E%3Cscript%3Ealert%280x0051D1%29%3C/script%3E&template=WebCreateNewTopic&topicparent=3http://example.com/do/view/TWiki/ATasteOfTWiki?'"--></style></script><script>alert(0x002B48)</script>

You can read the full article about Cross-Site Scripting vulnerabilities from here: http://www.mavitunasecurity.com/crosssite-scripting-xss/

Solution-----------------------------------
Upgrade to the latest TWiki version (5.1.0).

Credits-----------------------------------
It has been discovered on testing of Netsparker, Web ApplicationSecurity Scanner -
http://www.mavitunasecurity.com/netsparker/.

References-----------------------------------
Vendor Url :
http://twiki.org/cgi-bin/view/Codev/SecurityAlert-CVE-2011-3010MSL

Advisory Link :
http://www.mavitunasecurity.com/xss-vulnerability-in-twiki5/Netsparker

Advisories : http://www.mavitunasecurity.com/netsparker-advisories/

About Netsparker-----------------------------------
Netsparker® can find and report security issues such as SQL Injectionand Cross-site Scripting (XSS) in all web applications regardless ofthe platform and the technology they are built on. Netsparker's uniquedetection and exploitation technique
-- 
Netsparker Advisories, <advisories@mavitunasecurity.com>
Homepage, http://www.mavitunasecurity.com/netsparker-advisories/