AI Engine <= 3.7.7 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Attachment Disclosure via 'mediaId' Parameter

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-89141",
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "dateUpdated": "2026-09-15T06:07:31.075Z",
    "dateReserved": "2026-09-10T23:37:42.478Z",
    "datePublished": "2026-09-15T06:07:31.075Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence",
        "dateUpdated": "2026-09-15T06:07:31.075Z"
      },
      "title": "AI Engine <= 3.7.7 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Attachment Disclosure via 'mediaId' Parameter",
      "descriptions": [
        {
          "lang": "en",
          "value": "The AI Engine – The Chatbot, AI Framework & MCP for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.7 via the 'mediaId' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to access and retrieve the transcribed contents of private audio attachments belonging to other users, including Administrators, via a supplied attachment ID. This vulnerability requires the Public API module to be enabled in the plugin settings; when disabled, the REST route is absent and the endpoint returns HTTP 404."
        }
      ],
      "affected": [
        {
          "vendor": "tigroumeow",
          "product": "AI Engine – The Chatbot, AI Framework & MCP for WordPress",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "3.7.7"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-639 Authorization Bypass Through User-Controlled Key",
              "cweId": "CWE-639",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/2cb2ad5d-aa92-4186-aaae-45dde4a52f30?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.7.7/classes/api.php#L663"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.7.7/classes/api.php#L637"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.7.7/classes/core.php#L253"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.7.7/classes/api.php#L1168"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset/3693379"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM"
          }
        }
      ],
      "timeline": [
        {
          "time": "2026-09-10T23:40:24.000Z",
          "lang": "en",
          "value": "Vendor Notified"
        },
        {
          "time": "2026-09-14T17:10:00.000Z",
          "lang": "en",
          "value": "Disclosed"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Chi Trung Huynh",
          "type": "finder"
        }
      ]
    }
  }
}