A vulnerability has been found in shanyu SyCms up to a242ef2d194e8bb249dc175e7c49f2c1673ec921. This issue affects the function addPost of the file Application/Admin/Controller/FileManageController.class.php of the component Administrative Panel. The manipulation leads to code injection. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. This product adopts a rolling release strategy to maintain continuous delivery The project was informed of the problem early through an issue report but has not responded yet. This vulnerability only affects products that are no longer supported by the maintainer.