CVE-2021-28164

MEDIUM NUCLEI

Eclipse Jetty - Information Disclosure

Title source: nuclei
STIX 2.1

Exploitation Summary

EIP tracks 4 public exploits for CVE-2021-28164. PoCs published by Mayank Deshmukh, jammy0903, dyeat, including Metasploit module auxiliary/gather/jetty_web_inf_disclosure. A Nuclei detection template is also available.

AI-analyzed exploit summary This exploit demonstrates an information disclosure vulnerability in Jetty 9.4.37.v20210219 and 9.4.38.v20210224 by accessing the web.xml file via a path traversal attack using URL encoding.

Description

In Eclipse Jetty 9.4.37.v20210219 to 9.4.38.v20210224, the default compliance mode allows requests with URIs that contain %2e or %2e%2e segments to access protected resources within the WEB-INF directory. For example a request to /context/%2e/WEB-INF/web.xml can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application.

Exploits (4)

exploitdb WORKING POC
by Mayank Deshmukh · textwebappsjava
https://www.exploit-db.com/exploits/50438

This exploit demonstrates an information disclosure vulnerability in Jetty 9.4.37.v20210219 and 9.4.38.v20210224 by accessing the web.xml file via a path traversal attack using URL encoding.

Classification
Working Poc 100%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Jetty 9.4.37.v20210219 and 9.4.38.v20210224
No auth needed
Prerequisites: Access to the target Jetty server
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec STUB 1 stars
by jammy0903 · poc
https://github.com/jammy0903/-jettyCVE-2021-28164-

The repository contains only a minimal README with a title and a brief description in Korean, indicating an analysis of CVE-2021-28164 but no actual exploit code or technical details.

Classification
Stub 90%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: Eclipse Jetty
No auth needed
devstral-2 · analyzed Feb 18, 2026 Full analysis →
github SCANNER
by dyeat · pythonpoc
https://github.com/dyeat/cve-reproduction/tree/main/Eclipse/Jetty/CVE-2021-28164

The repository contains a Python script that scans for path traversal vulnerabilities in Eclipse Jetty by testing various encoded payloads. It checks for the presence of vulnerable paths but does not exploit them further.

Classification
Scanner 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Eclipse Jetty
No auth needed
Prerequisites: target URL
devstral-2 · analyzed May 22, 2026 Full analysis →
metasploit WORKING POC
by h00die, Mayank Deshmukh, cangqingzhe, lachlan roberts <[email protected]>, charlesk40 · rubypoc
https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/gather/jetty_web_inf_disclosure.rb

This Metasploit module exploits a path traversal vulnerability in Jetty to disclose files in the WEB-INF directory by leveraging encoded URIs. It supports two CVEs (CVE-2021-28164 and CVE-2021-34429) and retrieves files like web.xml.

Classification
Working Poc 100%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Jetty (versions 9.4.37-9.4.42, 10.0.1-10.0.5, 11.0.1-11.0.5)
No auth needed
Prerequisites: Network access to the Jetty server · WEB-INF directory must contain sensitive files
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

Eclipse Jetty - Information Disclosure
MEDIUMby noamrathaus
Shodan: cpe:"cpe:2.3:a:eclipse:jetty"

References (25)

Core 25
Core References
Mitigation, Third Party Advisory x_refsource_confirm
https://github.com/eclipse/jetty.project/security/advisories/GHSA-v7ff-8wcx-gmc5
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210611-0006/
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuoct2021.html
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujan2022.html
Not Applicable, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuapr2022.html

Scores

CVSS v3 5.3
EPSS 0.9348
EPSS Percentile 99.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Details

CWE
CWE-551 CWE-200
Status published
Products (21)
eclipse/jetty 9.4.37 20210219
eclipse/jetty 9.4.38 20210224
netapp/cloud_manager
netapp/e-series_performance_analyzer
netapp/e-series_santricity_os_controller 11.0 - 11.70.1
netapp/e-series_santricity_web_services
netapp/element_plug-in_for_vcenter_server
netapp/santricity_cloud_connector
netapp/snapcenter
netapp/snapcenter_plug-in
... and 11 more
Published Apr 01, 2021
Tracked Since Feb 18, 2026