CVE-2018-11764: Apache Hadoop

High severity, CVSS 8.8. EPSS: 2.4% chance of exploitation in the next 30 days.

Web endpoint authentication check is broken in Apache Hadoop 3.0.0-alpha4, 3.0.0-beta1, and 3.0.0. Authenticated users may impersonate any user even if no proxy user is configured.

Affected products

• Apache Hadoop: version 3.0.0 only

Published 2020-10-21. Last modified 2026-06-17.