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Dancer2-0.204002
⭐ Starred 552 / Dancer2::Core::MIME
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::MIME - Class to ease manipulation of MIME types

VERSION

version 0.204002

SYNOPSIS

use Dancer2::Core::MIME;

my $mime = Dancer2::Core::MIME->new();

# get mime type for an alias
my $type = $mime->for_name('css');

# set a new mime type
my $type = $mime->add_type( foo => 'text/foo' );

# set a mime type alias
my $alias = $mime->add_alias( f => 'foo' );

# get mime type for a file (based on extension)
my $file = $mime->for_file( "foo.bar" );

# set the $thing into a content $type.
my $type = $mime->name_or_type($thing);

# get current defined default mime type
my $type = $mime->default;

# set the default mime type using config.yml
# or using the set keyword
set default_mime_type => 'text/plain';

DESCRIPTION

Dancer2::Core::MIME is a thin wrapper around MIME::Types providing helpful methods for MIME handling.

ATTRIBUTES

custom_types

Custom user-defined MIME types that are added the with add_type.

default

Default MIME type defined by MIME::Types, set to: application/data.

METHODS

reset_default

This method resets mime_type to the default type.

add_type

This method adds the new MIME type.

add_alias

The add_alias sets a MIME type alias.

for_name

The method for_name gets MIME type for an alias.

for_file

This method gets MIME type for a file based on extension.

name_or_type

This method sets the customized MIME name or default MIME type into a content type.

AUTHOR

Dancer Core Developers

COPYRIGHT AND LICENSE

This software is copyright (c) 2016 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.