OpenReception: one tenant's throttle row disables the PIN brute-force throttle for the same identifier in other tenants

{
  "id": "6e759b13193bb195c6725805cb21a746b9ee5bbf3bdf8a4812f1b8ac2ff22aa2",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-65825",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "OpenReception: one tenant's throttle row disables the PIN brute-force throttle for the same identifier in other tenants",
    "summary": "OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. In versions 2.1.0 and prior, a returning client's six-digit booking PIN can be brute-forced online in the victim tenant. A successful guess yields the client's booking access token, granting access to that client's appointment tunnel, which holds their end-to-end-encrypted appointment data, and the ability to act as the client, for example adding or cancelling appointments in the tunnel. The bypass is cross-tenant: state owned by one tenant removes an authentication protection of a different tenant. This crossing of the tenant boundary is the basis for the scope-changed vector. At time of publication, there are no publicly available patches.",
    "evidence": "cve:CVE-2026-65825",
    "products": [
      {
        "name": {
          "value": "appointment-booking-software",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-65825",
      "aliases": [
        "CVE-2026-65825"
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "scope": "CHANGED",
            "version": "3.1",
            "baseScore": 7.5,
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N",
            "integrityImpact": "LOW",
            "userInteraction": "NONE",
            "attackComplexity": "HIGH",
            "availabilityImpact": "NONE",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "HIGH"
          }
        }
      ],
      "affected": [
        {
          "vendor": "open-reception",
          "product": "appointment-booking-software",
          "versions": [
            {
              "status": "affected",
              "version": "<= 2.1.0"
            }
          ]
        }
      ],
      "modified": "2026-10-26T17:45:38.981Z",
      "provider": "cve",
      "references": [
        "https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-v4q4-xmqf-gmq8"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-65825",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-26T15:39:10.074928Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-26T17:45:38.981Z"
            }
          }
        ],
        "cna": {
          "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
          "shortName": "GitHub_M",
          "dateUpdated": "2026-10-23T20:29:17.174Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-65825",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 326372,
  "published_at": "2026-10-23T20:29:17.174+00:00"
}