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Improper Input Validation

CVE-2021-21322

High
9.8/10

Summary

The NPM package fastify-http-proxy is a Fastify plugin for proxying your HTTP requests to another server, with hooks. By crafting a specific URL, it is possible to escape the prefix of the proxied backend service. If the base URL of the proxied server is "/pub/", a user expects that accessing "/priv" on the target service would not be possible. In affected versions, it is possible. This affects versions prior to 4.3.1.

  • LOW
  • NETWORK
  • HIGH
  • UNCHANGED
  • NONE
  • NONE
  • HIGH
  • HIGH

CWE-20 - Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

References

Advisory Timeline

  • Published