Cross-site scripting (XSS) vulnerability in htsrv/login.php in b2evolution 1.8.6 allows remote attackers to inject arbitrary web script or HTML via scriptable attributes in the redirect_to parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/31368
http://www.securityfocus.com/bid/21953
http://www.debian.org/security/2008/dsa-1568
http://secunia.com/advisories/30093