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Plack-1.0053
⭐ Starred 488 / Plack::Middleware::Recursive
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::Recursive - Allows PSGI apps to include or forward requests recursively

SYNOPSIS

# with Builder
enable "Recursive";

# in apps
my $res = $env->{'plack.recursive.include'}->("/new_path");

# Or, use exceptions
my $app = sub {
    # ...
    Plack::Recursive::ForwardRequest->throw("/new_path");
};

DESCRIPTION

Plack::Middleware::Recursive allows PSGI applications to recursively include or forward requests to other paths. Applications can make use of callbacks stored in $env->{'plack.recursive.include'} to include another path to get the response (whether it's an array ref or a code ref depending on your application), or throw an exception Plack::Recursive::ForwardRequest anywhere in the code to forward the current request (i.e. abort the current and redo the request).

EXCEPTIONS

This middleware passes through unknown exceptions to the outside middleware stack, so if you use this middleware with other exception handlers such as Plack::Middleware::StackTrace or Plack::Middleware::HTTPExceptions, be sure to wrap this so Plack::Middleware::Recursive gets as inner as possible.

AUTHORS

Tatsuhiko Miyagawa

Masahiro Honma

SEE ALSO

Plack Plack::Middleware::HTTPExceptions

The idea, code and interface are stolen from Rack::Recursive and paste.recursive.