CVE-2026-17538 (GCVE-0-2026-17538)

Vulnerability from cvelistv5 – Published: 2026-10-07 23:27 – Updated: 2026-10-07 23:27
VLAI
Title
Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress <= 5.6.9 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Customer PII Modification
Summary
The LatePoint - Appointment Booking & Reservation plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 5.6.9. This is due to the process_step_customer() function using is_user_logged_in() as the sole gate before merging POSTed customer data into an existing LatePoint customer, without any ownership checks. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the personal information (first name, last name, email, phone, notes) of arbitrary LatePoint customers, and, when the contact_merge setting is 'phone', to overwrite the victim's email address and take over the account via a password reset.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Wordfence CNA under the mitre root
CNA scorecard C 65/100 over 2108 records in the last 180 days details
References
Impacted products
Credits
owlmind
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Appointment Booking Plugin \u2013 LatePoint | Calendar \u0026 Scheduling for WordPress",
          "vendor": "latepoint",
          "versions": [
            {
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              "version": "0",
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            }
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        }
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        }
      ],
      "metrics": [
        {
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            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639 Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-07T23:27:12.424Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/83cdc51f-b5e1-42b9-972a-7e781f97b43e?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset/3631493/"
        }
      ],
      "timeline": [
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          "time": "2026-06-22T00:00:00.000Z",
          "value": "Discovered"
        },
        {
          "lang": "en",
          "time": "2026-07-27T09:51:30.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-10-07T11:12:20.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Appointment Booking Plugin \u2013 LatePoint | Calendar \u0026 Scheduling for WordPress \u003c= 5.6.9 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Customer PII Modification"
    }
  },
  "cveMetadata": {
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    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-17538",
    "datePublished": "2026-10-07T23:27:12.424Z",
    "dateReserved": "2026-07-27T09:35:22.512Z",
    "dateUpdated": "2026-10-07T23:27:12.424Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-10-08",
      "epss": "0.00151",
      "percentile": "0.03746"
    },
    "nvd": {
      "cve": {
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          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Appointment Booking Plugin \u2013 LatePoint | Calendar \u0026 Scheduling for WordPress",
                "vendor": "latepoint",
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          }
        ],
        "cveTags": [],
        "descriptions": [
          {
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            "value": "The LatePoint - Appointment Booking \u0026 Reservation plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 5.6.9. This is due to the process_step_customer() function using is_user_logged_in() as the sole gate before merging POSTed customer data into an existing LatePoint customer, without any ownership checks. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the personal information (first name, last name, email, phone, notes) of arbitrary LatePoint customers, and, when the contact_merge setting is \u0027phone\u0027, to overwrite the victim\u0027s email address and take over the account via a password reset."
          }
        ],
        "id": "CVE-2026-17538",
        "lastModified": "2026-10-08T17:24:31.040",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
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        "published": "2026-10-08T00:16:35.153",
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            "url": "https://plugins.trac.wordpress.org/changeset/3631493/"
          },
          {
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            "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/83cdc51f-b5e1-42b9-972a-7e781f97b43e?source=cve"
          }
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        "sourceIdentifier": "security@wordfence.com",
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        "weaknesses": [
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              }
            ],
            "source": "security@wordfence.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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