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Dancer-1.3003
⭐ Starred 738 / Dancer::MIME
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::MIME - Singleton object to handle MimeTypes

SYNOPSIS

# retrieve object instance
my $mime = Data::MIME->instance();

# add non standard mime type
$mime->add_mime_type( foo => "text/foo" );

# add an alias
$mime->add_mime_alias( bar => "foo" );

# get mime type for standard or non standard types
$nonstandard_type = $mime->mime_type_for('foo');
$standard_type = $mime->mime_type_for('svg');
Dancer::Response->status; # 200

PUBLIC API

instance

my $mime = Dancer::MIME->instance();

return the Dancer::MIME instance object.

add_mime_type

$mime->add_mime_type( foo => "text/foo" );

Adds a non standard mime type.

add_mime_alias

$mime->add_mime_alias( my_jpg => 'jpg' );

Add an alias to a standard or non standard mime type.

mime_type_for

$mime->mime_type_for( 'jpg' );

Retrieve the mime type for a standard or non standard mime type.

aliases

$my_aliases = $mime->aliases;

Retrieve the full hash table of added mime types and aliases.