Issue with Forwarded Header and Multiple Values in Spring

According to the RFC7239 specification, syntax for Forwarded Header is as follows:

Forwarded: by=<identifier>;for=<identifier>;host=<host>;proto=<http|https>

These values are used by Spring (all recent versions), if present, in order to reflect the client-originated protocol and address (when allowed through a configuration). There is a problem when using multiple values in this header:

# Multiple values can be appended using a comma
Forwarded: for=192.0.2.43,for=198.51.100.17;proto=https;host=xxx.yyy.com;by=10.97.9.10

The code in UriComponentsBuilder#adaptFromForwardedHeaders:798-800 gets the first Forwarded Header, if multiple are found, splits it by comma and uses only the first part:

	UriComponentsBuilder adaptFromForwardedHeaders(HttpHeaders headers) {
		try {
			String forwardedHeader = headers.getFirst("Forwarded");
			if (StringUtils.hasText(forwardedHeader)) {
				String forwardedToUse = StringUtils.tokenizeToStringArray(forwardedHeader, ",")[0];
                ....
	}

Using the example above, the forwardedToUse variable becomes Forwarded: for=192.0.2.43 where all useful information is trimmed.

Is this really an issue or there is something that I am missing? And if this is really a problem, how can I deal with it.
Thanks a lot in advance!

It seems that there is an issue in Spring with Forwarded header in case of multiple values. It is fixed with the commit below and will be available in next release:

• GitHub Issue: Issue with Forwarded Header and Multiple Values

• Spring Framework Commit: Do not tokenize Forward header value

• Release: Spring 5.2.9.RELEASE