OpenReception has unauthenticated GLOBAL_ADMIN account creation post-bootstrap

{
  "id": "d8183149bf2b11574ad305a19039d1d835fef8c0a3bd9a38e360434b0fe79f58",
  "url": "https://osv.dev/vulnerability/CVE-2026-48085",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "OpenReception has unauthenticated GLOBAL_ADMIN account creation post-bootstrap",
    "summary": "OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 1.0.1, a fully provisioned OpenReception instance accepts unauthenticated POST requests to `/setup/create-admin-account` and creates additional GLOBAL_ADMIN accounts without verifying that an admin already exists. Any unauthenticated network attacker who can submit a same-origin form POST gains full platform-level administrative control. The newly created account is `is_active=true` with `confirmation_state=ACCESS_GRANTED` and does not require completing email confirmation; the GLOBAL_ADMIN row is created active and immediately usable. Login and tenant enumeration succeed without any further interaction. This is distinct from the deployment race condition already documented on the `Claiming an instance` page. That documented race covers the window between deployment and first claim. The bug reported here works after the operator has properly claimed and configured the instance: the layout-level guard that protects the setup page only redirects on GET, while the `default` form action handler creates the user without rechecking `adminExists()`. Three GLOBAL_ADMIN accounts were created in succession during testing, with no rate limiting observed. Audit-specific event logging beyond standard application logs was not assessed; the standard `[error]` line that surfaces only when a uniqueness conflict is hit is not the same as a security event for \"additional ",
    "evidence": "osv:CVE-2026-48085",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-48085",
      "aliases": [
        "CVE-2026-48085",
        "GHSA-qvvq-hhpj-64rp"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/open-reception/appointment-booking-software",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "222408af6fd4bd85554a25ec8de8131bd0733797"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.0.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "222408af6fd4bd85554a25ec8de8131bd0733797"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.0.1"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.0.0",
            "v1.0.0-rc2",
            "v1.0.0-rc"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48085.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:50.395493751Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48085.json",
        "https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-qvvq-hhpj-64rp",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-48085",
        "https://github.com/open-reception/appointment-booking-software/commit/222408af6fd4bd85554a25ec8de8131bd0733797"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48085.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-48085",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 519012,
  "published_at": "2026-08-06T21:29:00.382+00:00"
}