Protection Mechanism Failure

Overview Affected versions of this package are vulnerable to Protection Mechanism Failure in the defmodule, defmethod, or defclass methods due to insufficient deserialization guards. An attacker can achieve arbitrary code execution by supplying crafted input to Marshal.load in a Ruby application...

CVE-2026-41316 ERB has an @_init deserialization guard bypass via def_module / def_method / def_class

ERB is a templating system for Ruby. Ruby 2.7.0 before ERB 2.2.0 was published on rubygems.org introduced an @init instance variable guard in ERBresult and ERBrun to prevent code execution when an ERB object is reconstructed via Marshal.load deserialization. However, three other public methods th...