sunkaifei FlyCMS Admin Login IndexAdminController.java cross site scripting

A security flaw has been discovered in sunkaifei FlyCMS up to abbaa5a8daefb146ad4d61027035026b052cb414. The affected element is an unknown function of the file src/main/java/com/flycms/web/system/IndexAdminController.java of the component Admin Login. Performing a manipulation of the argument redirectUrl results in cross site scripting. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The vendor was contacted early about this disclosure but did not respond in any way.