CVE-2021-41275

Spree Auth Devise vulnerability allows for authentication bypass through CSRF weakness

Workarounds

If possible, change your strategy to :exception:

class ApplicationController < ActionController::Base
  protect_from_forgery with: :exception
end

Add the following toconfig/application.rb to at least run the :exception strategy on the affected controller:

config.after_initialize do
  Spree::UsersController.protect_from_forgery with: :exception
end

References

https://github.com/solidusio/solidus_auth_devise/security/advisories/GHSA-xm34-v85h-9pg2

CSRF vulnerability that allows user account takeover.

All applications using any version of the frontend component of spree_auth_devise are affected if protect_from_forgery method is both:

• Executed whether as:
  • A before_action callback (the default)
  • A prepend_before_action (option prepend: true given) before the :load_object hook in Spree::UserController (most likely order to find).
• Configured to use :null_session or :reset_session strategies (:null_session is the default in case the no strategy is given, but rails --new generated skeleton use :exception).

That means that applications that haven't been configured differently from what it's generated with Rails aren't affected.

Thanks @waiting-for-dev for reporting and providing a patch 👏

A victim's authenticated browser session is used to submit forged requests to an application that cannot distinguish them from legitimate ones. Typical impact: state-changing actions performed as the victim without their consent.

CVE-2021-41275 has a CVSS score of 9.3 (Critical). The vector is network-reachable, no privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (4.4.1, 4.2.1, 4.1.1, 4.0.1); upgrading removes the vulnerable code path.

Kodem intelligence

Already deployed Kodem?

Spree 4.3 users should update to spree_auth_devise 4.4.1
Spree 4.2 users should update to spree_auth_devise 4.2.1
Spree 4.1 users should update to spree_auth_devise 4.1.1
Older Spree version users should update to spree_auth_devise 4.0.1

1. What is CVE-2021-41275? CVE-2021-41275 is a critical-severity cross-site request forgery (CSRF) vulnerability in spree_auth_devise (rubygems), affecting versions >= 4.3.0, < 4.4.1. It is fixed in 4.4.1, 4.2.1, 4.1.1, 4.0.1. A victim's authenticated browser session is used to submit forged requests to an application that cannot distinguish them from legitimate ones.
2. How severe is CVE-2021-41275? CVE-2021-41275 has a CVSS score of 9.3 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of spree_auth_devise are affected by CVE-2021-41275? spree_auth_devise (rubygems) versions >= 4.3.0, < 4.4.1 is affected.
4. Is there a fix for CVE-2021-41275? Yes. CVE-2021-41275 is fixed in 4.4.1, 4.2.1, 4.1.1, 4.0.1. Upgrade to this version or later.
5. Is CVE-2021-41275 exploitable, and should I be worried? Whether CVE-2021-41275 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2021-41275 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2021-41275?
   • Upgrade spree_auth_devise to 4.4.1 or later
   • Upgrade spree_auth_devise to 4.2.1 or later
   • Upgrade spree_auth_devise to 4.1.1 or later
   • Upgrade spree_auth_devise to 4.0.1 or later

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