Stats for request methods are only counted for ASCII words, anything else is counted as 'other'. Stats for content types are only counted for well-formed types.

• https://github.com/robrwo/Plack-Middleware-Statsd/security/advisories/GHSA-m5mc-hhfv-6rjf
• https://github.com/briandfoy/cpan-security-advisory/issues/198
• https://metacpan.org/dist/Plack-Middleware-Statsd/changes

Plack::Middleware::Statsd versions before 0.9.0 for Perl may leak user IP addresses. If the communication channel to the statsd daemon is not secured (for example, by sending UDP packets to a host on another network), then users' IP addresses may be leaked. Since version 0.9.0, the IP address is no longer logged to statsd unless configured. When configured, an HMAC signature of the IP address is logged instead.

• https://github.com/robrwo/Plack-Middleware-Statsd/security/advisories/GHSA-9gwm-665p-w2xx
• https://metacpan.org/release/RRWO/Plack-Middleware-Statsd-v0.9.0/changes