Security Advisories (3)
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.

CVE-2011-1589 (2011-04-05)

Directory traversal vulnerability (Mojolicious report, but Dancer was vulnerable as well).

NAME

Dancer::Cookie - class representing cookies

SYNOPSIS

use Dancer::Cookie;

my $cookie = Dancer::Cookie->new(
    name => $cookie_name, value => $cookie_value
);

DESCRIPTION

Dancer::Cookie provides a HTTP cookie object to work with cookies.

ATTRIBUTES

name

The cookie's name.

value

The cookie's value.

expires

The cookie's expiration date.

domain

The cookie's domain.

path

The cookie's path.

METHODS/SUBROUTINES

new

Create a new Dancer::Cookie object.

You can set any attribute described in the ATTRIBUTES section above.

init

Runs an expiration test and sets a default path if not set.

to_header

Creates a proper HTTP cookie header from the content.

_epoch_to_gmtstring

Internal method to convert the time from Epoch to GMT.

AUTHOR

Alexis Sukrieh

LICENSE AND COPYRIGHT

Copyright 2009-2010 Alexis Sukrieh.

This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License.

See http://dev.perl.org/licenses/ for more information.