414 URI Too Long

The HTTP 414 URI Too Long response status code indicates that the URL requested by the client is longer than the server is willing to interpret.

There are a few conditions when this might occur:

  • A client has improperly converted a POST request to a GET request with more than ≈2 kB of submitted data.
  • A client has descended into a loop of redirection (for example, a redirected URL prefix that points to a suffix of itself, or mishandled relative URLs),
  • The server is under attack by a client attempting to exploit potential security holes.


414 URI Too Long


Specification Title
RFC 7231, section 6.5.12: 414 URI Too Long Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content

See also