Token Exchange Vulnerability in Shopify App by Shopify
CVE-2026-63414

7.6HIGH

Key Information:

Vendor

Shopify

Status
Shopify App
Vendor
CVE Published:
30 October 2026

What is CVE-2026-63414?

The Shopify App contains a vulnerability that allows authenticated controllers using token-exchange to expose a request-derived shop context instead of authenticating with a verified Shopify ID token. As a result, the current_shopify_domain can reflect an arbitrary shop parameter, enabling attackers with valid Shopify session tokens to impersonate other shops. This could lead to unauthorized access to application data and actions scoped for different shops. The vulnerability affects versions of the Shopify App from 22.1.0 up to 23.0.3 and has been addressed in version 23.0.3.

Affected Version(s)

shopify_app >= 22.1.0, < 23.0.3

References

https://github.com/Shopify/shopify_app/security/advisorie...
x_refsource_CONFIRM
https://github.com/Shopify/shopify_app/pull/2081
x_refsource_MISC
https://github.com/Shopify/shopify_app/commit/a09ccc04b95...
x_refsource_MISC

CVSS V4

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.