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Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')


Severity High
Score 7.5/10


In Reactor Netty HTTP Server versions 1.0.x prior to 1.0.39, and 1.1.x prior to 1.1.13, a malicious user can send a request using a specially crafted URL that can lead to a directory traversal attack. Specifically, an application is vulnerable if the Reactor Netty HTTP Server is configured to serve static resources.

  • LOW
  • NONE
  • NONE
  • NONE
  • HIGH
  • NONE

CWE-22 - Path Traversal

Path traversal (or directory traversal), is a vulnerability that allows malicious users to traverse the server's root directory, gaining access to arbitrary files and folders such as application code & data, back-end credentials, and sensitive operating system files. In the worst-case scenario, an attacker could potentially execute arbitrary files on the server, resulting in a denial of service attack. Such an exploit may severely impact the integrity, confidentiality, and availability of an application.

Advisory Timeline

  • Published