VULNERABILITY INTELLIGENCE

CVE-2021-28164

CVSS score5.3 MEDIUM
EPSS probability82.37%
CISA KEVNot currently listed
Published2021-04-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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.

Weakness classification

  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-551: Incorrect Behavior Order: Authorization Before Parsing and Canonicalization

Primary references