Security Advisories (11)
CPANSA-Mojolicious-2022-03 (2022-12-10)

Mojo::DOM did not correctly parse <script> tags.

CPANSA-Mojolicious-2021-02 (2021-06-01)

Small sessions could be used as part of a brute-force attack to decode the session secret.

CVE-2021-47208 (2021-03-16)

A bug in format detection can potentially be exploited for a DoS attack.

CVE-2020-36829 (2020-11-10)

Mojo::Util secure_compare can leak the string length. By immediately returning when the two strings are not the same length, the function allows an attacker to guess the length of the secret string using timing attacks.

CPANSA-Mojolicious-2018-03 (2018-05-19)

Mojo::UserAgent was not checking peer SSL certificates by default.

CPANSA-Mojolicious-2018-02 (2018-05-11)

GET requests with embedded backslashes can be used to access local files on Windows hosts

CVE-2018-25100 (2018-02-13)

Mojo::UserAgent::CookieJar leaks old cookies because of the missing host_only flag on empty domain.

CPANSA-Mojolicious-2015-01 (2015-02-02)

Directory traversal on Windows

CPANSA-Mojolicious-2014-01 (2014-10-07)

Context sensitivity of method param could lead to parameter injection attacks.

CVE-2024-58134 (2025-05-03)

Mojolicious versions from 0.999922 for Perl uses a hard coded string, or the application's class name, as an HMAC session cookie secret by default. These predictable default secrets can be exploited by an attacker to forge session cookies.  An attacker who knows or guesses the secret could compute valid HMAC signatures for the session cookie, allowing them to tamper with or hijack another user’s session.

CVE-2026-14803 (2026-07-06)

Mojo::JSON versions before 9.47 for Perl allow memory exhaustion via unbounded recursion in the pure-Perl decoder. The pure-Perl decode path (`_decode_value` dispatching to `_decode_array` and `_decode_object`) recurses with no depth limit, so a small deeply nested JSON document can consume excessive memory. This path is the default when Cpanel::JSON::XS is not installed or `MOJO_NO_JSON_XS=1` is set; the Cpanel::JSON::XS fast path is not affected. Any caller that decodes an untrusted JSON body, for example `Mojo::Message::json` reached through `$c->req->json`, can exhaust process memory and cause denial of service.

NAME

Mojo::Transaction::HTTP - HTTP transaction

SYNOPSIS

use Mojo::Transaction::HTTP;

# Client
my $tx = Mojo::Transaction::HTTP->new;
$tx->req->method('GET');
$tx->req->url->parse('http://mojolicio.us');
$tx->req->headers->accept('application/json');
say $tx->res->code;
say $tx->res->headers->content_type;
say $tx->res->body;

# Server
my $tx = Mojo::Transaction::HTTP->new;
say $tx->req->method;
say $tx->req->url->to_abs;
say $tx->req->headers->accept;
$tx->res->code(200);
$tx->res->headers->content_type('text/plain');
$tx->res->body('Hello World!');

DESCRIPTION

Mojo::Transaction::HTTP is a container for HTTP transactions as described in RFC 2616.

EVENTS

Mojo::Transaction::HTTP inherits all events from Mojo::Transaction and can emit the following new ones.

request

$tx->on(request => sub {
  my $tx = shift;
  ...
});

Emitted when a request is ready and needs to be handled.

$tx->on(request => sub {
  my $tx = shift;
  $tx->res->headers->header('X-Bender', 'Bite my shiny metal ass!');
});

upgrade

$tx->on(upgrade => sub {
  my ($tx, $ws) = @_;
  ...
});

Emitted when transaction gets upgraded to a Mojo::Transaction::WebSocket object.

$tx->on(upgrade => sub {
  my ($tx, $ws) = @_;
  $ws->res->headers->header('X-Bender', 'Bite my shiny metal ass!');
});

ATTRIBUTES

Mojo::Transaction::HTTP inherits all attributes from Mojo::Transaction.

METHODS

Mojo::Transaction::HTTP inherits all methods from Mojo::Transaction and implements the following new ones.

client_read

$tx->client_read($chunk);

Read and process client data.

client_write

my $chunk = $tx->client_write;

Write client data.

keep_alive

my $success = $tx->keep_alive;

Check if connection can be kept alive.

server_leftovers

my $leftovers = $tx->server_leftovers;

Leftovers from the server request, used for pipelining.

server_read

$tx->server_read($chunk);

Read and process server data.

server_write

my $chunk = $tx->server_write;

Write server data.

SEE ALSO

Mojolicious, Mojolicious::Guides, http://mojolicio.us.