/ 
Plack-1.0043
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/ Plack::Middleware::Log4perl
Security Advisories (1)
CVE-2026-7381 (2026-04-29)

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.

NAME

Plack::Middleware::Log4perl - Uses Log::Log4perl to configure logger

SYNOPSIS

my $app = sub {
    my $env =  shift;

    $env->{'psgix.logger'}({ level => 'error', message => 'Hi' });

    return [
        '200',
        [ 'Content-Type' => 'text/plain' ],
        [ "Hello World" ],
    ];
};


# Use your own Log4perl configuration
use Log::Log4perl;
Log::Log4perl::init('/path/to/log4perl.conf');

builder {
    # tell the logger to log with 'plack' category
    enable "Log4perl", category => "plack";
    $app;
}


# Configure with Log4perl middleware options
builder {
    enable "Log4perl", category => "plack", conf => '/path/to/log4perl.conf';
    $app;
}

DESCRIPTION

Log4perl is a Plack::Middleware component that allows you to use Log::Log4perl to configure the logging object psgix.logger for a given category.

CONFIGURATION

category

The log4perl category to send logs to. Defaults to '' which means it send to the root logger.

conf

The configuration file path (or a scalar ref containing the config string) for Log::Log4perl to automatically configure.

AUTHOR

Tatsuhiko Miyagawa

SEE ALSO

Log::Log4perl

Plack::Middleware::LogDispatch