In Apache Hadoop versions 2.6.1 to 2.6.5, 2.7.0 to 2.7.3, and 3.0.0-alpha1, if a file in an encryption zone with access permissions that make it world readable is localized via YARN's localization mechanism, that file will be stored in a world-readable location and can be shared freely with any application that requests to localize that file.

The Hadoop connector 1.1.1, 2.4, 2.5, and 2.7.0-0 before 2.7.0-3 for IBM Spectrum Scale and General Parallel File System (GPFS) allows local users to read or write to arbitrary GPFS data via unspecified vectors.

In Apache Hadoop 2.6.x before 2.6.5 and 2.7.x before 2.7.3, a remote user who can authenticate with the HDFS NameNode can possibly run arbitrary commands with the same privileges as the HDFS service.