www.eVuln.com advisory:
Non-persistent XSS in WWWThreads (perl version)
Summary: http://evuln.com/vulns/157/summary.html 
Details: http://evuln.com/vulns/157/description.html 

-----------Summary-----------
eVuln ID: EV0157
Software: n/a
Vendor: WWWThreads
Version: v5.0.8 Pro (perl version)
Critical Level: low
Type: Cross Site Scripting
Status: Unpatched. No reply from developer(s)
PoC: Available
Solution: Not available
Discovered by: Aliaksandr Hartsuyeu ( http://evuln.com/ )
--------Description--------
It is possible to inject xss code into view parameter in showflat.pl script.
Parameter view is not sanitized before being used in HTML code
--------PoC/Exploit--------
Non-persistent XSS Example.

XSS example: http://website/cgi-bin/forum/showflat.pl?Cat=&Board=forum&Number=111&page=0&view="<XSS>expanded&sb=1&part=all&vc=1
---------Solution----------
Not available
----------Credit-----------
Vulnerability discovered by Aliaksandr Hartsuyeu
http://evuln.com/malicious-site.html - recent eVuln article