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HIGH severity

CVE-2016-5393 — hadoop-common

HIGH

CVE-2016-5393 is a high-severity (CVSS 8.8) CWE-284 vulnerability in org.apache.hadoop:hadoop-common. A fix is available for org.apache.hadoop:hadoop-common — see the affected versions and patch details below.

Improper Access Control in Apache Hadoop

Also known asGHSA-7q56-mp4c-gggg
Published
Updated
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed
Exploitation data as of Nov 7, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
3.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs88th percentile — riskier than 88% of all scored CVEsHighest risk
2.00%2.55%3.10%3.64%2.6%3.1%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

2 pkgs affected
☕org.apache.hadoop:hadoop-common☕org.apache.hadoop:hadoop-common

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.apache.hadoop:hadoop-common≥ 2.6.0&&< 2.6.52.6.5org.apache.hadoop:hadoop-common:2.6.5
☕Mavenorg.apache.hadoop:hadoop-common≥ 2.7.0&&< 2.7.32.7.3org.apache.hadoop:hadoop-common:2.7.3

Affected Products

1 product · 8 configurations
Application
hadoopapache
8 versions
2.6.02.6.12.6.22.6.32.6.42.7.02.7.12.7.2

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.hadoop:hadoop-common, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.apache.hadoop:hadoop-common to 2.6.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2016-5393 is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

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.
O3 Security · Impact-Aware SCA

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CVE-2016-5393: hadoop-common — Fixed in 2.6.5