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Dancer-1.3079_03
⭐ Starred 738 / Dancer::Serializer
Security Advisories (2)
CVE-2026-5080 (2026-04-30)

Dancer::Session::Abstract versions through 1.3522 for Perl generates session ids insecurely. The session id is generated from summing the character codepoints of the absolute pathname with the process id, the epoch time and calls to the built-in rand() function to return a number between 0 and 999-billion, and concatenating that result three times. The path name might be known or guessed by an attacker, especially for applications known to be written using Dancer with standard installation locations. The epoch time can be guessed by an attacker, and may be leaked in the HTTP header. The process id comes from a small set of numbers, and workers may have sequential process ids. The built-in rand() function is seeded with 32-bits and is considered unsuitable for security applications. Predictable session ids could allow an attacker to gain access to systems.

CVE-2012-5572 (2014-05-30)

CRLF injection vulnerability in the cookie method allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via a cookie name.

NAME

Dancer::Serializer - serializer wrapper for Dancer

DESCRIPTION

This module is the wrapper that provides support for different serializers.

USAGE

Configuration

The serializer configuration variable tells Dancer which serializer to use to deserialize request and serialize response.

You change it either in your config.yml file:

serializer: "YAML"

Or in the application code:

# setting JSON as the default serializer
set serializer => 'JSON';

In your routes you can access parameters just like any route.

When in a route you return a Perl data structure, it will be serialized automatically to the respective serialized engine (for instance, JSON).

For PUT and POST methods you can access the request-body> as a string, and you can unserialize it, if you really need. If your content type is recognized by the serializer, request-body> will be unserialized automatically, and it will be available as a standard parameter.

For instance, if you call

curl -X POST -H 'Content-Type: application/json -d "{'id':'bar'}" /foo

your foo route can do something like:

post "/foo" => {
   my $id = param('id'); # gets "bar"
   #  ...
}

AUTHORS

This module has been written by Alexis Sukrieh and Franck Cuny. See the AUTHORS file that comes with this distribution for details.

LICENSE

This module is free software and is released under the same terms as Perl itself.

SEE ALSO

See Dancer for details about the complete framework.