Moodle: duplicating a bigbluebutton activity assigns the same meeting id

{
  "id": "ec32a1497bc01cd55f52056b735444194ebb9f9ef9baaf337d2e9daaf041d778",
  "url": "https://osv.dev/vulnerability/CVE-2023-5543",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Moodle: duplicating a bigbluebutton activity assigns the same meeting id",
    "summary": "When duplicating a BigBlueButton activity, the original meeting ID was also duplicated instead of using a new ID for the new activity. This could provide unintended access to the original meeting.",
    "evidence": "osv:CVE-2023-5543",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2023-5543",
      "aliases": [
        "BIT-moodle-2023-5543",
        "CVE-2023-5543"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/moodle/moodle",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8b359ad7a63cf219110bca80552fe3d4ea2a635d"
                },
                {
                  "fixed": "b72ce02928c561588861d24330b2c3619f76d116"
                },
                {
                  "introduced": "0ea3d45e04c3d54a3a472ddcb11606b30e227c50"
                },
                {
                  "fixed": "b0a7bc3f42a0db2a0bf66b93623534f5f9af3294"
                },
                {
                  "introduced": "ae4efa96ee8169a848c141ad21690165ea791552"
                },
                {
                  "fixed": "97130393545528109fb8ce9d9e45e3f84fed3880"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0"
                      },
                      {
                        "fixed": "4.0.11"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.1.0"
                      },
                      {
                        "fixed": "4.1.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.2.0"
                      },
                      {
                        "fixed": "4.2.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.1.5",
            "v4.2.2",
            "v4.0.10",
            "v4.0.9",
            "v4.2.1",
            "v4.1.4",
            "v4.2.0",
            "v4.0.8",
            "v4.1.3",
            "v4.0.7",
            "v4.1.2",
            "v4.0.6",
            "v4.1.1",
            "v4.1.0",
            "v4.0.5",
            "v4.0.4",
            "v4.0.3",
            "v4.0.2",
            "v4.0.1",
            "v4.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-5543.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.773939272Z",
      "provider": "osv",
      "references": [
        "https://git.moodle.org",
        "https://moodle.org/mod/forum/discuss.php?d=451584",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/5xxx/CVE-2023-5543.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-5543",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2243442"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-284"
        ],
        "cna_assigner": "fedora",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "4.2.0"
                  },
                  {
                    "fixed": "4.2.3"
                  },
                  {
                    "introduced": "4.1.0"
                  },
                  {
                    "fixed": "4.1.6"
                  },
                  {
                    "introduced": "4.0.0"
                  },
                  {
                    "fixed": "4.0.11"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/5xxx/CVE-2023-5543.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-5543",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521812,
  "published_at": "2023-11-09T21:35:38.116+00:00"
}