Multiple cross-site request forgery (CSRF) vulnerabilities in OpenX 2.8.11 and earlier allow remote attackers to hijack the authentication of administrators for requests that delete (1) users via admin/agency-user-unlink.php, (2) advertisers via admin/advertiser-delete.php, (3) banners via admin/banner-delete.php, (4) campaigns via admin/campaign-delete.php, (5) channels via admin/channel-delete.php, (6) affiliate websites via admin/affiliate-delete.php, or (7) zones via admin/zone-delete.php.