Jetty contains an alias issue that could allow unauthenticated remote code execution due to specially crafted request

CRITICAL 9.8CVE-2016-4800 · GHSA-872g-2h8h-362q · Published 13/04/2017 · updated 17/06/2026

In short

CVE-2016-4800 is a CRITICAL (CVSS 9.8) vulnerability affecting org.eclipse.jetty:jetty-server, jetty (eclipse).
Chance of exploitation in the next 30 days (EPSS): 6.4%, higher than 93.7% of all vulnerabilities.
Fix: update to 9.3.9 or later.

Package	Affected versions	Patched versions
org.eclipse.jetty:jetty-server Maven	`≥ 9.3.0, < 9.3.9`	`9.3.9`
jetty eclipse	`= 9.3.0= 9.3.1= 9.3.2= 9.3.3= 9.3.4= 9.3.5= 9.3.6= 9.3.7= 9.3.8`	No fix yet

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.

NVD description

References

nvd.nist.gov/vuln/detail/CVE-2016-4800 · ADVISORY
GitHub Advisory GHSA-872g-2h8h-362q · ADVISORY
security.netapp.com/advisory/ntap-20190307-0006 · WEB
oracle.com/security-alerts/cpuoct2020.html · WEB
dev.eclipse.org/mhonarc/lists/jetty-announce/msg00092.html · WEB
ocert.org/advisories/ocert-2016-001.html · WEB
securityfocus.com/bid/90945 · WEB
zerodayinitiative.com/advisories/ZDI-16-362 · WEB
security.netapp.com/advisory/ntap-20190307-0006

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Package

Affected versions

Patched versions

org.eclipse.jetty:jetty-server

Maven

≥ 9.3.0, < 9.3.9

9.3.9

jetty

eclipse

= 9.3.0= 9.3.1= 9.3.2= 9.3.3= 9.3.4= 9.3.5= 9.3.6= 9.3.7= 9.3.8

No fix yet

Description

NVD description

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