CVE-2026-55651

{
  "id": "CVE-2026-55651",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-14T16:17:00.937",
  "lastModified": "2026-10-24T21:10:00.130",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Easy!Appointments is a self hosted appointment scheduler. In version 1.5.2, an Excessive Data Exposure vulnerability in the customers search endpoint allows an authenticated user to obtain appointment hashes belonging to other users.\nUsing these hashes, an attacker can modify or delete appointments of other providers, resulting in an Appointments Takeover. Version 1.6.0 fixes the issue."
    },
    {
      "lang": "es",
      "value": "Easy!Appointments es un gestor de citas autoalojado. En la versión 1.5.2, una vulnerabilidad de Exposición Excesiva de Datos en el endpoint de búsqueda de clientes permite a un usuario autenticado obtener hashes de citas pertenecientes a otros usuarios.\nUsando estos hashes, un atacante puede modificar o eliminar citas de otros proveedores, resultando en una Toma de Control de Citas. La versión 1.6.0 soluciona el problema."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "alextselegidis",
          "product": "easyappointments",
          "versions": [
            {
              "version": "= 1.5.2",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-14T15:59:40.381297Z",
          "id": "CVE-2026-55651",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-4vmm-5qvc-w5p7",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-4vmm-5qvc-w5p7",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}