IBM WebSphere Portal 6.1.0 through 6.1.0.6 CF27, 6.1.5 through 6.1.5.3 CF27, 7.0.0 through 7.0.0.2 CF30, 8.0.0 through 8.0.0.1 CF21, and 8.5.0 before CF12 allows remote authenticated users to cause a denial of service by uploading temporary files.