CVE-2023-40167

Jetty is a Java based web server and servlet engine. Prior to versions
9.4.52, 10.0.16, 11.0.16, and 12.0.1, Jetty accepts the + character
proceeding the content-length value in a HTTP/1 header field. This is more
permissive than allowed by the RFC and other servers routinely reject such
requests with 400 responses. There is no known exploit scenario, but it is
conceivable that request smuggling could result if jetty is used in
combination with a server that does not close the connection after sending
such a 400 response. Versions 9.4.52, 10.0.16, 11.0.16, and 12.0.1 contain
a patch for this issue. There is no workaround as there is no known exploit
scenario.