Cross-site scripting (XSS) vulnerability in index.php3 in SPIP 1.8.2-e and earlier and 1.9 Alpha 2 (5539) and earlier allows remote attackers to inject arbitrary web script or HTML via the lang parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24401
http://www.zone-h.org/en/advisories/read/id=8650/
http://www.vupen.com/english/advisories/2006/0398