Frappe LMS: Quiz result manipulation and cross-user submission forgery

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-61805",
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "dateUpdated": "2026-10-30T17:01:42.988Z",
    "dateReserved": "2026-07-10T20:06:05.618Z",
    "datePublished": "2026-10-30T17:01:42.988Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M",
        "dateUpdated": "2026-10-30T17:01:42.988Z"
      },
      "title": "Frappe LMS: Quiz result manipulation and cross-user submission forgery",
      "descriptions": [
        {
          "lang": "en",
          "value": "Frappe Learning Management System (LMS) is a learning system that helps users structure their content. Prior to version 2.54.0, quiz submission records are not adequately authorized on the server. Through a `REST` bypass, an authenticated student can record a passing or perfect quiz result without their answers being verified, unlocking course completion and certificates. The student can also create a submission attributed to another user, exhausting that user's allowed attempts and blocking legitimate submissions. These integrity and availability issues are scoped to quiz results; they do not expose other users' data or grant elevated roles. This issue is fixed in version 2.54.0."
        }
      ],
      "affected": [
        {
          "vendor": "frappe",
          "product": "lms",
          "versions": [
            {
              "version": "< 2.54.0",
              "status": "affected"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-862: Missing Authorization",
              "cweId": "CWE-862",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://github.com/frappe/lms/security/advisories/GHSA-4566-2phx-68gh",
          "name": "https://github.com/frappe/lms/security/advisories/GHSA-4566-2phx-68gh",
          "tags": [
            "x_refsource_CONFIRM"
          ]
        },
        {
          "url": "https://github.com/frappe/lms/commit/876504f3900512f528b6e4a7bd3a15673eedd386",
          "name": "https://github.com/frappe/lms/commit/876504f3900512f528b6e4a7bd3a15673eedd386",
          "tags": [
            "x_refsource_MISC"
          ]
        },
        {
          "url": "https://github.com/frappe/lms/tree/v2.54.0",
          "name": "https://github.com/frappe/lms/tree/v2.54.0",
          "tags": [
            "x_refsource_MISC"
          ]
        }
      ],
      "metrics": [
        {}
      ]
    }
  }
}