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Dancer2-0.202000
⭐ Starred 552 / Dancer2::Core::Hook
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::Hook - Manipulate hooks with Dancer2

VERSION

version 0.202000

SYNOPSIS

# inside a plugin
use Dancer2::Core::Hook;
Dancer2::Core::Hook->register_hooks_name(qw/before_auth after_auth/);

METHODS

register_hook ($hook_name, [$properties], $code)

hook 'before', {apps => ['main']}, sub {...};

hook 'before' => sub {...};

Attaches a hook at some point, with a possible list of properties.

Currently supported properties:

apps
an array reference containing apps name

register_hooks_name

Add a new hook name, so application developers can insert some code at this point.

package My::Dancer2::Plugin;
Dancer2::Core::Hook->instance->register_hooks_name(qw/before_auth after_auth/);

execute_hook

Execute a hooks

get_hooks_for

Returns the list of coderef registered for a given position

hook_is_registered

Test if a hook with this name has already been registered.

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.