Security advisory

{
  "id": "d79961f63c084cca371c1d2fbe7958d4b68dd1234b49a56a7719932ca43a5b2f",
  "url": "https://osv.dev/vulnerability/CVE-2020-5231",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-5231",
    "summary": "In Opencast before 7.6 and 8.1, users with the role ROLE_COURSE_ADMIN can use the user-utils endpoint to create new users not including the role ROLE_ADMIN. ROLE_COURSE_ADMIN is a non-standard role in Opencast which is referenced neither in the documentation nor in any code (except for tests) but only in the security configuration. From the name – implying an admin for a specific course – users would never expect that this role allows user creation. This issue is fixed in 7.6 and 8.1 which both ship a new default security configuration.",
    "evidence": "osv:CVE-2020-5231",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-5231",
      "aliases": [
        "CVE-2020-5231",
        "GHSA-94qw-r73x-j7hg"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/opencast/opencast",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6241ba154a6b364fea1928e52f8bf2a432934dc8"
                },
                {
                  "introduced": "5bb6a93a43a7f7c47f789e46e4018c80b8c54c8b"
                },
                {
                  "last_affected": "5bb6a93a43a7f7c47f789e46e4018c80b8c54c8b"
                },
                {
                  "fixed": "72fad0031d8a82c860e2bde0b27570c5042320ee"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apereo:opencast:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "7.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:apereo:opencast:8.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.0"
                      },
                      {
                        "last_affected": "8.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "72fad0031d8a82c860e2bde0b27570c5042320ee"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-5231.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:22.263906127Z",
      "provider": "osv",
      "references": [
        "https://github.com/opencast/opencast/commit/72fad0031d8a82c860e2bde0b27570c5042320ee",
        "https://github.com/opencast/opencast/security/advisories/GHSA-94qw-r73x-j7hg"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-5231",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385211,
  "published_at": "2020-01-30T22:15:10.22+00:00"
}