Rapid7’s 2026 Global Cybersecurity Summit is now available on-demand.Watch sessions.
Rapid7

module

Ruby On Rails DoubleTap Development Mode secret_key_base Vulnerability

Disclosed
Mar 13, 2019

Description

This module exploits a vulnerability in Ruby on Rails. In development mode, a Rails
application would use its name as the secret_key_base, and can be easily extracted by
visiting an invalid resource for a path. As a result, this allows a remote user to
create and deliver a signed serialized payload, load it by the application, and gain
remote code execution.
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.