CVE-2016-5001: Apache Hadoop

Medium severity, CVSS 5.5. EPSS: 0.7% chance of exploitation in the next 30 days.

This is an information disclosure vulnerability in Apache Hadoop before 2.6.4 and 2.7.x before 2.7.2 in the short-circuit reads feature of HDFS. A local user on an HDFS DataNode may be able to craft a block token that grants unauthorized read access to random files by guessing certain fields in the token.

Affected products

• Apache Hadoop: up to and including 2.6.3; version 2.7.0 only; version 2.7.1 only

Published 2017-08-30. Last modified 2026-06-17.