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Dancer2-0.04
⭐ Starred 552 / Dancer2::Core::App
Security Advisories (2)
CPANSA-Dancer2-2018-01 (2018-01-30)

There is a potential RCE with regards to Storable. We have added session ID validation to the session engine so that session backends based on Storable can reject malformed session IDs that may lead to exploitation of the RCE.

CVE-2026-13577 (2026-07-20)

Dancer2 versions through 2.1.0 for Perl generate insecure session ids when required CSPRNG modules are unavailable. Dancer2::Core::Role::SessionFactory::generate_id silently falls back to a built-in rand-derived session id unless both Math::Random::ISAAC::XS and Crypt::URandom are available. The fallback session id is generated from a SHA-1 hash of a call to the built-in rand function, the absolute path of the Dancer2::Core::Role::SessionFactory module, an internal counter, the process id, the module instance memory address, and a shuffled string of characters (using the List::Util::shuffle function, which also uses the built-in rand function). These are all low-entropy and easily guessed sources. The built-in rand() function is seeded with 32-bits and considered unsuitable for security applications. Predictable session ids could allow an attacker to gain access to systems.

NAME

Dancer2::Core::App - encapsulation of Dancer2 packages

VERSION

version 0.04

DESCRIPTION

Everything a package that uses Dancer2 does is encapsulated into a Dancer2::Core::App instance. This class defines all that can be done in such objects.

Mainly, it will contain all the route handlers, the configuration settings and the hooks that are defined in the calling package.

Note that with Dancer2, everything that is done within a package is scoped to that package, thanks to that encapsulation.

ATTRIBUTES

plugins

server

location

runner_config

default_config

METHODS

register_plugin

lexical_prefix

Allow for setting a lexical prefix

$app->lexical_prefix('/blog', sub {
    ...
});

All the route defined within the callback will have a prefix appended to the current one.

add_route

Register a new route handler.

$app->add_route(
    method => 'get',
    regexp => '/somewhere',
    code => sub { ... }
);

routes_regexps_for

Sugar for getting the ordered list of all registered route regexps by method.

my $regexps = $app->routes_regexps_for( 'get' );

Returns an ArrayRef with the results.

AUTHOR

Dancer Core Developers

COPYRIGHT AND LICENSE

This software is copyright (c) 2013 by Alexis Sukrieh.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.