Plack::Middleware::XSendfile versions through 1.0053 for Perl can allow client-controlled path rewriting. Plack::Middleware::XSendfile allows the variation setting (sendfile type) to be set by the client via the X-Sendfile-Type header, if it is not considered in the middleware constructor or the Plack environment. A malicious client can set the X-Sendfile-Type header to "X-Accel-Redirect" to services running behind nginx reverse proxies, and then set the X-Accel-Mapping to map the path to an arbitrary file on the server. Since 1.0053, Plack::Middleware::XSendfile is deprecated and will be removed from future releases of Plack. This is similar to CVE-2025-61780 for Rack::Sendfile, although Plack::Middleware::XSendfile has some mitigations that disallow regular expressions to be used in the mapping, and only apply the mapping for the "X-Accel-Redirect" type.
Plack::Middleware::NullLogger - Send logs to /dev/null
enable "NullLogger";NullLogger is a middleware component that receives logs and does nothing but discarding them. Might be useful to shut up all the logs from frameworks in one shot.
Tatsuhiko Miyagawa
To install Plack, copy and paste the appropriate command in to your terminal.
cpanm Plackperl -MCPAN -e shell
install PlackFor more information on module installation, please visit the detailed CPAN module installation guide.
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