{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.50.0"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "kimai/kimai"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.51.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-28685"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-285",
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-04T20:43:17Z",
    "nvd_published_at": "2026-03-06T05:16:38Z",
    "severity": "MODERATE"
  },
  "details": "## Summary\n\n`GET /api/invoices/{id}` only checks the role-based `view_invoice` permission but does not verify the requesting user has `access` to the invoice\u0027s customer. Any user with `ROLE_TEAMLEAD` (which grants `view_invoice`) can read all invoices in the system, including those belonging to customers assigned to other teams.\n\n## Affected Code\n\n`src/API/InvoiceController.php` line 92-101:\n\n```php\n#[IsGranted(\u0027view_invoice\u0027)]           // Role check only, no customer access check\n#[Route(methods: [\u0027GET\u0027], path: \u0027/{id}\u0027, name: \u0027get_invoice\u0027, requirements: [\u0027id\u0027 =\u003e \u0027\\d+\u0027])]\npublic function getAction(Invoice $invoice): Response\n{\n    $view = new View($invoice, 200);\n    $view-\u003egetContext()-\u003esetGroups(self::GROUPS_ENTITY);\n    return $this-\u003eviewHandler-\u003ehandle($view);  // Returns ANY invoice by ID\n}\n```\n\nThe web controller (`src/Controller/InvoiceController.php` line 304-307) correctly checks customer access:\n\n```php\n#[IsGranted(\u0027view_invoice\u0027)]\n#[IsGranted(new Expression(\"is_granted(\u0027access\u0027, subject.getCustomer())\"), \u0027invoice\u0027)]\npublic function downloadAction(Invoice $invoice, ...): Response { ... }\n```\n\nThe `access` attribute in `CustomerVoter` (line 71-87) verifies team membership, but this check is entirely missing from the API endpoint.\n\n## PoC\n\nTested against Kimai v2.50.0 (Docker: `kimai/kimai2:apache`).\n\nSetup:\n- TeamA with CustomerA (\"SecretCorp\"), TeamB with CustomerB (\"BobCorp\")\n- Bob is a teamlead in TeamB only\n- An invoice exists for SecretCorp (TeamA)\n\n```bash\n# Bob (TeamB) reads SecretCorp (TeamA) invoice\ncurl -H \"Authorization: Bearer BOB_TOKEN\" http://localhost:8888/api/invoices/1\n```\n\nResponse (200 OK):\n```json\n{\n  \"invoiceNumber\": \"INV-2026-001\",\n  \"total\": 15000.0,\n  \"currency\": \"USD\",\n  \"customer\": {\"name\": \"SecretCorp\", ...}\n}\n```\n\nBob can also enumerate all invoices via `GET /api/invoices` \u2014 the list endpoint uses `setCurrentUser()` in the query but the single-item endpoint bypasses this entirely via Symfony ParamConverter.\n\n## Impact\n\nAny teamlead can read all invoices across the system regardless of team assignment. Invoice data typically contains sensitive financial information (amounts, customer details, payment terms). In multi-team deployments this breaks the intended data isolation between teams.\n\n## Suggested Fix\n\nAdd the customer access check to the API endpoint, matching the web controller:\n\n```diff\n #[IsGranted(\u0027view_invoice\u0027)]\n+#[IsGranted(new Expression(\"is_granted(\u0027access\u0027, subject.getCustomer())\"), \u0027invoice\u0027)]\n #[Route(methods: [\u0027GET\u0027], path: \u0027/{id}\u0027, name: \u0027get_invoice\u0027)]\n public function getAction(Invoice $invoice): Response\n```",
  "id": "GHSA-v33r-r6h2-8wr7",
  "modified": "2026-03-06T15:17:08Z",
  "published": "2026-03-04T20:43:17Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/kimai/kimai/security/advisories/GHSA-v33r-r6h2-8wr7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28685"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kimai/kimai/commit/a0601c8cb28fed1cca19051a8272425069ab758f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/kimai/kimai"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kimai/kimai/releases/tag/2.51.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Kimai\u0027s API invoice endpoint missing customer-level access control (IDOR)"
}