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Dancer2-0.203001
⭐ Starred 552 / Dancer2::Core::HTTP
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::HTTP - helper for rendering HTTP status codes for Dancer2

VERSION

version 0.203001

FUNCTIONS

status(status_code)

Dancer2::Core::HTTP->status(200); # returns 200

Dancer2::Core::HTTP->status('Not Found'); # returns 404

Dancer2::Core::HTTP->status('bad_request'); # 400

Returns a HTTP status code. If given an integer, it will return the value it received, else it will try to find the appropriate alias and return the correct status.

status_message(status_code)

Dancer2::Core::HTTP->status_message(200); # returns 'OK'

Dancer2::Core::HTTP->status_message('error'); # returns 'Internal Server Error'

Returns the HTTP status message for the given status code.

status_mapping()

my %table = Dancer2::Core::HTTP->status_mapping;
# returns ( 'Ok' => 200, 'Created' => 201, ... )

Returns the full table of status -> code mappings.

code_mapping()

my %table = Dancer2::Core::HTTP->code_mapping;
# returns ( 200 => 'Ok', 201 => 'Created', ... )

Returns the full table of code -> status mappings.

all_mappings()

my %table = Dancer2::Core::HTTP->all_mappings;
# returns ( 418 => 'I'm a teapot', "I'm a teapot' => 418, 'i_m_a_teapot' => 418 )

Returns the code-to-status, status-to-code and underscore-groomed status-to-code mappings all mashed up in a single table. Mostly for internal uses.

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.