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 segm

Summary

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.

Timeline

1. Apr 1, 2021, 2:20 PM UTCCVE published
2. Oct 22, 2021Public exploit on Exploit-DB

   EDB-50438

3. Aug 3, 2024, 9:40 PM UTCRecord last updated
4. Oct 28, 2026EPSS reached 10%

   FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

• The Eclipse Foundation Eclipse Jetty

  From 9.4.37.v20210219; through 9.4.38.v20210224

• org.eclipse.jetty:jetty-webappMaven

  From 9.4.37 · fixed in 9.4.39

References 30