Jeesite 1.2.7 is affected by: XML External Entity (XXE). The impact is: sensitive information disclosure. The component is: convertToModel() function in src/main/java/com.thinkgem.jeesite/modules/act/service/ActProcessService.java. The attack vector is: network connectivity,authenticated,must upload a specially crafted xml file. The fixed version is: 4.0 and later.