CVE-2026-48008: Shopware Privilege Escalation Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-gv8p-48fr-4fxg",
  "modified" : "2026-06-04T19:23:33Z",
  "published" : "2026-06-04T19:23:33Z",
  "aliases" : [ "CVE-2026-48008" ],
  "summary" : "Shopware: Privilege Escalation via Sync API Integration Admin Flag Bypass",
  "details" : "## Summary\n\nA non-admin API user with `integration:create` ACL privilege can escalate to full administrator by creating an integration with `admin: true` through the Sync API (`POST /api/_action/sync`). The regular integration endpoint (`POST /api/integration`) correctly blocks this, but the Sync API bypasses the controller-level check by writing directly through the DAL EntityWriter. The `integration` entity definition lacks `WriteProtection`, and the `admin` field has no field-level restriction flag.\n\n**OWASP:** A01:2021 — Broken Access Control\n\n## Root Cause\n\n`IntegrationController::upsertIntegration()` checks `$source->isAdmin()` before allowing the `admin` field to be set. However, `SyncController::sync()` routes writes through `SyncService → EntityWriter`, which only applies:\n\n1. `AclWriteValidator` — checks entity-level ACL (`integration:create` is sufficient)\n2. `EntityProtectionValidator` — checks `WriteProtection` on entity definitions, but `IntegrationDefinition` has none\n\nThe `admin` field in `IntegrationDefinition` is a plain `BoolField` with no `WriteProtection` or special flag. The Sync API writes it without restriction.\n\n**Vulnerable code path:**\n- `src/Core/Framework/Api/Controller/SyncController.php` → `SyncService` → `EntityWriter::upsert()`\n- **Missing protection:** `src/Core/Framework/Integration/IntegrationDefinition.php` — `admin` field has no `WriteProtection(Context::SYSTEM_SCOPE)`\n\n**Working protection (bypassed):**\n- `src/Core/Framework/Integration/IntegrationController.php:46-56` — `isAdmin()` check only applies to the dedicated controller endpoint\n\n## Impact\n\n- **Complete admin API access** — the escalated integration has full read/write on every entity: users, customers, orders, system configuration, integrations, plugins\n- **PII exfiltration** — read all customer records (names, emails, addresses, order history)\n- **Persistent backdoor** — the admin integration survives password changes and user deactivation\n\n## Remediation\n\nAdd `WriteProtection(Context::SYSTEM_SCOPE)` to `IntegrationDefinition`, matching how `UserDefinition` and `AclRoleDefinition` are already protected:\n\n```php\n// src/Core/Framework/Integration/IntegrationDefinition.php\n(new BoolField('admin', 'admin'))\n    ->addFlags(new WriteProtection(Context::SYSTEM_SCOPE)),\n```",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "shopware/platform"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.7.0.0"
      }, {
        "fixed" : "6.7.10.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "shopware/platform"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "6.6.10.18"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "shopware/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.7.0.0"
      }, {
        "fixed" : "6.7.10.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "shopware/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "6.6.10.18"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/shopware/shopware/security/advisories/GHSA-gv8p-48fr-4fxg"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/shopware/shopware"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/shopware/shopware/releases/tag/v6.6.10.18"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/shopware/shopware/releases/tag/v6.7.10.1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-04T19:23:33Z",
    "nvd_published_at" : null
  }
}