{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-48086",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-05-20T18:40:45.833Z",
        "datePublished": "2026-08-06T21:30:32.142Z",
        "dateUpdated": "2026-08-07T14:36:39.807Z"
    },
    "containers": {
        "cna": {
            "title": "OpenReception: Tenant admin self-promotes to GLOBAL_ADMIN",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-269",
                            "lang": "en",
                            "description": "CWE-269: Improper Privilege Management",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 9.9,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "LOW",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-5qfr-7q4g-3469",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-5qfr-7q4g-3469"
                },
                {
                    "name": "https://github.com/open-reception/appointment-booking-software/commit/8525d35a41c31078d9f01c62e9687e653cf1a494",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/open-reception/appointment-booking-software/commit/8525d35a41c31078d9f01c62e9687e653cf1a494"
                }
            ],
            "affected": [
                {
                    "vendor": "open-reception",
                    "product": "appointment-booking-software",
                    "versions": [
                        {
                            "version": "< 1.0.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-06T21:30:32.142Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 1.0.2, a TENANT_ADMIN promotes themselves to platform-wide GLOBAL_ADMIN through a single PUT request. The role-update handler accepts the `GLOBAL_ADMIN` enum value from any tenant admin updating their own tenant's staff. No policy check enforces that \"only an existing GLOBAL_ADMIN may grant GLOBAL_ADMIN\", so the schema validation IS the authorization decision. After re-login, the JWT contains the new role and the formerly-tenant-scoped admin reaches every other tenant on the platform. On the hosted OpenReception service this is a scope-changed escalation: a single customer-side tenant administrator gains full platform-wide administrative control over all other tenants' configuration, users, staff records, operational metadata, and tenant lifecycle. Plaintext appointment contents remain subject to the E2E model unless chained with the staff-crypto poisoning issue (V-4) or with staff-passkey hijacking (V-1). On a single-tenant self-hosted deployment it is still a privilege escalation because TENANT_ADMIN should not be able to create new tenants, modify global configuration, or manage other administrators. The same handler also accepts updates targeted at any colleague within the tenant. A tenant admin can promote a separate collaborator account instead of themselves, leaving their own audit trail clean while the platform-wide breach happens through a separate identity. Version 1.0.2 fixes the issue."
                }
            ],
            "source": {
                "advisory": "GHSA-5qfr-7q4g-3469",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-5qfr-7q4g-3469",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-07T14:36:33.558143Z",
                                "id": "CVE-2026-48086",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-08-07T14:36:39.807Z"
                }
            }
        ]
    }
}