CVE-2021-43846: CSRF forgery protection bypass for Spree::OrdersController#populate

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-12-20 · updated 2026-06-17
Weakness: CWE-352

Description

`solidus_frontend` is the cart and storefront for the Solidus e-commerce project. Versions of `solidus_frontend` prior to 3.1.5, 3.0.5, and 2.11.14 contain a cross-site request forgery (CSRF) vulnerability that allows a malicious site to add an item to the user's cart without their knowledge. Versions 3.1.5, 3.0.5, and 2.11.14 contain a patch for this issue. The patch adds CSRF token verification to the "Add to cart" action. Adding forgery protection to a form that missed it can have some side effects. Other CSRF protection strategies as well as a workaround involving modifcation to config/application.rb` are available. More details on these mitigations are available in the GitHub Security Advisory.

Affected products

solidusio solidus: before 2.11.14; from 3.0.0 before 3.0.5; from 3.1.0 before 3.1.5 — fixed in 2.11.14, 3.0.5, 3.1.5

How to fix

Upgrade to a fixed version: solidusio solidus 2.11.14, 3.0.5, 3.1.5. Check the vendor advisory for mitigations.

References

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