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Case File

CVE-2021-28164

MEDIUM · CVSS 5.3 EPSS 82.37% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-04-01 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 82.4% probability of exploitation in the next 30 days.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
External Security References

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-28164
Severity
MEDIUM
CVSS
5.3
EPSS
82.37%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)