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Dancer-1.3522
⭐ Starred 738 / Dancer::Handler::PSGI
Security Advisories (1)
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.

NAME

Dancer::Handler::PSGI - a PSGI handler for Dancer applications

VERSION

version 1.3522

DESCRIPTION

This handler allows Dancer applications to run as part of PSGI stacks. Dancer will automatically determine when running in a PSGI environment and enable this handler, such that calling dance will return a valid PSGI application.

You may enable Plack middleware in your configuration file under the plack_middlewares key. See Dancer::Cookbook for more information.

Note that you must have Plack installed for this handler to work.

USAGE

# in bin/app.pl
set apphandler => 'Debug';

# then, run the app the following way
perl -d bin/app.pl GET '/some/path/to/test' 'with=parameters&other=42'

AUTHORS

Dancer contributors

AUTHOR

Dancer Core Developers

COPYRIGHT AND LICENSE

This software is copyright (c) 2010 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.