A vulnerability was found in OpenKM up to 6.3.11 and classified as problematic. Affected by this issue is the function getFileExtension of the file src/main/java/com/openkm/util/FileUtils.java. The manipulation leads to insecure temporary file. Upgrading to version 6.3.12 is able to address this issue. The name of the patch is c069e4d73ab8864345c25119d8459495f45453e1. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-213548.

OpenKM 6.3.2 through 6.3.7 allows an attacker to upload a malicious JSP file into the /okm:root directories and move that file to the home directory of the site, via frontend/FileUpload and admin/repository_export.jsp. This is achieved by interfering with the Filesystem path control in the admin's Export field. As a result, attackers can gain remote code execution through the application server with root privileges.