Hi, our Spring Boot application using Spring Boot 3.1.4 which includes spring-web:6.0.12 started throwing 5xx due to a malformed X-Forwarded-For header in the requests that were returned with 5xx and this error in our logs; java.lang.IllegalArgumentException: Failed to parse a port from "forwarded"-type headers.

I would suggest introducing a mechanism to skip extracting "forwarded"-type headers in ForwardedHeaderFilter when the header format is invalid. Our service SLOs are impacted by this issue and such incidents attract unnecessary attention. Thanks!