CVE-2026-63414

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{"bugzilla": {"description": "shopify_app: shopify_app: Authorization bypass via unverified shop parameter", "id": "2567937", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2567937"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-639", "details": ["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.", "A flaw was found in shopify_app. In token-exchange authentication workflows, the application can resolve the active store context from an unverified request parameter rather than the validated session token. An authenticated remote attacker with a valid session token for one store can exploit this flaw by submitting requests containing a target store identifier. This may result in authorization bypass, allowing the attacker to access or alter another store's sensitive application data."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-63414", "public_date": "2026-10-30T22:49:47Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-63414\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-63414\nhttps://github.com/Shopify/shopify_app/commit/a09ccc04b9556cbb31c6d56ed81aeb6b9b6c0756\nhttps://github.com/Shopify/shopify_app/pull/2081\nhttps://github.com/Shopify/shopify_app/releases/tag/v23.0.3\nhttps://github.com/Shopify/shopify_app/security/advisories/GHSA-6j52-38f8-qhxr"], "statement": "Red Hat Product Security rates this vulnerability as Important because an authenticated remote attacker can break tenant isolation to access or alter data belonging to other stores without administrative privileges. The shopify_app gem is a specialized Ruby on Rails engine that is not packaged or distributed with Red Hat Enterprise Linux or other Red Hat supported products. Default installations are not exposed unless custom multi-tenant applications that incorporate this library are hosted in the environment.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[22.1.0,23.0.3)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "shopify_app", "source": "cna", "vendor": "Shopify"}, "product": "shopify_app", "vendor": "shopify"}], "created": "2026-10-31T00:30:14.795736+00:00", "updated": "2026-11-06T16:00:08.120378+00:00", "vendors": ["shopify", "shopify$PRODUCT$shopify_app"]}