Cross-site scripting vulnerability exists in a-blog cms Ver.3.1.x series versions prior to Ver.3.1.7, Ver.3.0.x series versions prior to Ver.3.0.29, Ver.2.11.x series versions prior to Ver.2.11.58, Ver.2.10.x series versions prior to Ver.2.10.50, and Ver.2.9.0 and earlier versions. If this vulnerability is exploited, a user with a contributor or higher privilege may execute an arbitrary script on the web browser of the user who accessed the website using the product.