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Dancer-1.3522
⭐ Starred 738 / Dancer::Plugin::Ajax
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::Plugin::Ajax - a plugin for adding Ajax route handlers

VERSION

version 1.3522

SYNOPSIS

package MyWebApp;

use Dancer;
use Dancer::Plugin::Ajax;

ajax '/check_for_update' => sub {
    # ... some Ajax code
};

dance;

DESCRIPTION

The ajax keyword which is exported by this plugin allow you to define a route handler optimized for Ajax queries.

The route handler code will be compiled to behave like the following:

  • Pass if the request header X-Requested-With doesn't equal XMLHttpRequest

  • Disable the layout

  • The action built matches POST / GET requests.

CONFIGURATION

By default the plugin will use a content-type of 'text/xml' but this can be overwritten with plugin setting 'content_type'.

Here is example to use JSON:

plugins:
  'Ajax':
    content_type: 'application/json'

AUTHOR

This module has been written by Alexis Sukrieh <sukria@sukria.net>

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.