What is CVE-2018-11764?

CVE-2018-11764 is a high-severity vulnerability in Apache Hadoop, classified under Missing Authentication for Critical Function. CVSS score: 8.8/10. Published 2020-10-21.

How severe is CVE-2018-11764?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Apache Hadoop

CVE-2018-11764

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.

Vulnerability class: Broken Authentication

Published 2020-10-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.024 (84.0th percentile), scored 2026-11-01.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000

Affected products

Apache Hadoop — versions 3.0.0
Apache Hadoop — versions Apache Hadoop 3.0.0-alpha4, 3.0.0-beta1, 3.0.0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

lists.apache.org/thread.html/r790ad0a049cde713b93589ecfd4dd2766fda0fc6807eedb6c… (Mailing List, Vendor Advisory)
security.netapp.com/advisory/ntap-20201103-0003/ (Third Party Advisory)

Frequently asked questions

What is CVE-2018-11764?: CVE-2018-11764 is a high-severity vulnerability in Apache Hadoop, classified under Missing Authentication for Critical Function. CVSS score: 8.8/10. Published 2020-10-21.
How severe is CVE-2018-11764?: High severity. CVSS v3 base score is 8.8 out of 10.