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Mojolicious-7.46
⭐ Starred 2674 / Mojo::Server::Morbo::Backend
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.

CVE-2024-58135 (2025-05-03)

Mojolicious versions from 7.28 through 9.45 for Perl will generate weak HMAC session cookie secrets via "mojo generate app" by default. When creating a default app skeleton with the "mojo generate app" tool, a weak secret is written to the application's configuration file using the insecure rand() function, and used for authenticating and protecting the integrity of the application's sessions. This may allow an attacker to brute force the application's session keys. Release 9.46 fixes the issue by providing high quality randomness, even in absence of CryptX. Users should be aware that the update does not replace previously generated weak secrets. A secret generated with the previous version MUST be replaced to ensure the updated version is using a strong secret.

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.

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-2026-15747 (2026-07-14)

Mojolicious versions from 4.59 before 9.48 for Perl expose a stable representation of the session CSRF token to a BREACH compression oracle. _csrf_token generates and caches one token per session and returns the same value on every call, and _csrf_field places that value in a hidden `csrf_token` input. When a response carrying the token also echoes attacker-controlled input and is gzip-compressed, the chosen values and the resulting compressed lengths form a BREACH oracle. An attacker able to query it can recover the token and pass csrf_protect validation.

NAME

Mojo::Server::Morbo::Backend - Morbo backend base class

SYNOPSIS

package Mojo::Server::Morbo::Backend::Inotify:
use Mojo::Base 'Mojo::Server::Morbo::Backend';

sub modified_files {...}

DESCRIPTION

Mojo::Server::Morbo::Backend is an abstract base class for Morbo backends, like Mojo::Server::Morbo::Backend::Poll.

ATTRIBUTES

Mojo::Server::Morbo::Backend implements the following attributes.

watch

my $watch = $backend->watch;
$backend  = $backend->watch(['/home/sri/my_app']);

Files and directories to watch for changes, defaults to the application script as well as the lib and templates directories in the current working directory.

watch_timeout

my $timeout = $backend->watch_timeout;
$backend    = $backend->watch_timeout(10);

Maximum amount of time in seconds a backend may block when waiting for files to change, defaults to the value of the MOJO_MORBO_TIMEOUT environment variable or 1.

METHODS

Mojo::Server::Morbo::Backend inherits all methods from Mojo::Base and implements the following new ones.

modified_files

my $files = $backend->modified_files;

Check if files from "watch" have been modified since the last check and return an array reference with the results. Meant to be overloaded in a subclass.

# All files that have been modified
say for @{$backend->modified_files};

SEE ALSO

Mojolicious, Mojolicious::Guides, http://mojolicious.org.