/ 
Plack-0.9021
⭐ Starred 488
/ Plack::Server::Standalone::Prefork
Security Advisories (4)
CPANSA-Plack-2015-0202 (2015-02-02)

Fixed a possible directory traversal with Plack::App::File on Win32.

CPANSA-Plack-2014-0801 (2014-08-01)

Plack::App::File would previously strip trailing slashes off provided paths. This in combination with the common pattern of serving files with Plack::Middleware::Static could allow an attacker to bypass a whitelist of generated files

CPANSA-Plack-2013-0131 (2013-01-31)

Fixed directory traversal bug in Plack::App::File on win32 environments

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::Server::Standalone::Prefork - Prefork standalone HTTP server

SYNOPSIS

% plackup -s Standalone::Prefork \
    --host 127.0.0.1 --port 9091 --timeout 120 \
    --max-keepalive-reqs 20 --keepalive-timeout 5 \
    --max-workers 10 --max-reqs-per-child 320

DESCRIPTION

Plack::Server::Standalone::Prefork is a prefork standalone HTTP server. HTTP/1.0 and Keep-Alive requests are supported.

Some features in HTTP/1.1, notably chunked requests, responses and pipeline requests are NOT supported yet.

CONFIGURATIONS

host, port, timeout, keepalive-timeout

Same as Plack::Server::Standalone.

max-workers

Number of prefork workers. Defaults to 10.

max-reqs-per-child

Number of requests per worker to process. Defaults to 100.

max-keepalive-reqs

Max requests per a keep-alive request. Defaults to 100.

AUTHOR

Kazuho Oku

SEE ALSO

Plack::Server::Standalone