{"cve":"CVE-2026-63414","nvd":{"published":"2026-10-30T23:17:15.707","modified":"2026-10-30T23:17:15.707","status":"Received","description":"Shopify App is a Rails engine for building Shopify applications. From 22.1.0 until 23.0.3, `token-exchange` authenticated controllers can expose a request-derived `shop` context instead of the identity from a verified Shopify ID token or active Shopify session. `current_shopify_domain` can resolve to the sanitized `shop` query parameter, so a request authenticated for one `shop` can cause application code to treat a different requested `shop` as current. Affected applications use `shopify_app` `token-exchange` authentication, accept authenticated requests with a `shop` query parameter, and rely on `current_shopify_domain` or `params[:shop]` for authorization, tenant lookup, stored access-token selection or `shop`-scoped data access. An attacker with a valid Shopify session token for one `shop` can supply another `shop` in that parameter and potentially obtain unauthorized application data or perform `shop`-scoped actions, depending on the application's authorization model. This issue is fixed in version 23.0.3.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":7.6},"cvss_v3":null,"cwes":["CWE-863"],"references":["https://github.com/Shopify/shopify_app/commit/a09ccc04b9556cbb31c6d56ed81aeb6b9b6c0756","https://github.com/Shopify/shopify_app/pull/2081","https://github.com/Shopify/shopify_app/releases/tag/v23.0.3","https://github.com/Shopify/shopify_app/security/advisories/GHSA-6j52-38f8-qhxr"],"products":[],"source":"nvd","synced_at":"2026-10-30T23:37:05.673931202+00:00"},"epss":null,"kev":null,"osv":[{"id":"GHSA-6j52-38f8-qhxr","url":"https://osv.dev/vulnerability/GHSA-6j52-38f8-qhxr","summary":"Shopify App: Token exchange shop context confusion may allow cross-shop authorization bypass in affected apps","modified":"2026-10-29T16:45:05.328073736Z","packages":[{"ecosystem":"RubyGems","name":"shopify_app","purl":"pkg:gem/shopify_app","ranges":[">=22.1.0 <23.0.3"],"fixed":["23.0.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}