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CVE-2026-12843 (GCVE-0-2026-12843)

Vulnerability from cvelistv5 – Published: 2026-09-05 11:28 – Updated: 2026-09-05 11:28
VLAI
Title
LearnDash LMS 4.25.0 - 5.1.6 - Unauthenticated Arbitrary Course Enrollment via REST Endpoint
Summary
The LearnDash LMS plugin for WordPress is vulnerable to authorization bypass in versions 4.25.0 - 5.1.6. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to enroll arbitrary users in paid courses without payment verification, bypassing the entire payment system and gaining unauthorized access to premium educational content.
CWE
Impacted products
Vendor Product Version CPE status
StellarWP LearnDash LMS Affected: 4.25.0 , ≤ 5.1.6 (semver)
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "LearnDash LMS",
          "vendor": "StellarWP",
          "versions": [
            {
              "lessThanOrEqual": "5.1.6",
              "status": "affected",
              "version": "4.25.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Applied Cybernetics"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The LearnDash LMS plugin for WordPress is vulnerable to authorization bypass in versions 4.25.0 - 5.1.6. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to enroll arbitrary users in paid courses without payment verification, bypassing the entire payment system and gaining unauthorized access to premium educational content."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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-862",
              "description": "CWE-862 Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-05T11:28:46.987Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/48d29e8d-4084-401e-82ff-e4750d739c7c?source=cve"
        },
        {
          "url": "https://docs.nexcess.com/software/changelogs/learndash/sfwd-lms/5-1-6-1/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-06-21T21:28:17.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-09-04T00:00:00.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "LearnDash LMS 4.25.0 - 5.1.6 - Unauthenticated Arbitrary Course Enrollment via REST Endpoint"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-12843",
    "datePublished": "2026-09-05T11:28:46.987Z",
    "dateReserved": "2026-06-21T21:10:35.916Z",
    "dateUpdated": "2026-09-05T11:28:46.987Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-12843\",\"sourceIdentifier\":\"security@wordfence.com\",\"published\":\"2026-09-05T12:16:46.923\",\"lastModified\":\"2026-09-05T12:16:46.923\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The LearnDash LMS plugin for WordPress is vulnerable to authorization bypass in versions 4.25.0 - 5.1.6. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to enroll arbitrary users in paid courses without payment verification, bypassing the entire payment system and gaining unauthorized access to premium educational content.\"}],\"affected\":[{\"source\":\"security@wordfence.com\",\"affectedData\":[{\"vendor\":\"StellarWP\",\"product\":\"LearnDash LMS\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"4.25.0\",\"lessThanOrEqual\":\"5.1.6\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@wordfence.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N\",\"baseScore\":5.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":2.5}]},\"weaknesses\":[{\"source\":\"security@wordfence.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-862\"}]}],\"references\":[{\"url\":\"https://docs.nexcess.com/software/changelogs/learndash/sfwd-lms/5-1-6-1/\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://www.wordfence.com/threat-intel/vulnerabilities/id/48d29e8d-4084-401e-82ff-e4750d739c7c?source=cve\",\"source\":\"security@wordfence.com\"}]}}"
  }
}



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