AIKIDO-2026-135231
shopify_app is vulnerable to Authorization Bypass
75
High Risk
This Affects:
shopify_appTL;DR
In token-exchange authenticated controllers, the current_shopify_domain helper resolves to the sanitized shop query parameter before falling back to the shop identity from the verified Shopify ID token or active session. An attacker holding a valid session token for one shop can send an authenticated request carrying a different shop parameter, causing application code that trusts current_shopify_domain or params[:shop] to operate in the context of the requested shop. This enables cross-shop authorization bypass, allowing access to another shop's data or shop-scoped actions. The fix resolves current_shopify_domain from the authenticated shop, adds authenticated_shopify_domain and requested_shopify_domain helpers, and rejects token-exchange requests with 401 Unauthorized when the requested shop does not match the authenticated shop.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and your application uses token-exchange authentication and relies on current_shopify_domain or the request shop parameter for authorization or shop-scoped data access.
Background info
shopify_app is vulnerable to Authorization Bypass in versions 22.1.0 - 23.0.2.
How to fix this
Upgrade the shopify_app library to the patch version.
Are You Affected?
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