Security advisory

{
  "id": "2853b9388ed959eb6b3c86b185ecbc7512afaf11d717d0aedb738814100266b3",
  "url": "https://osv.dev/vulnerability/CVE-2021-36568",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-36568",
    "summary": "In certain Moodle products after creating a course, it is possible to add in a arbitrary \"Topic\" a resource, in this case a \"Database\" with the type \"Text\" where its values \"Field name\" and \"Field description\" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11 and Moodle 3.10.4 and Moodle 3.9.7.",
    "evidence": "osv:CVE-2021-36568",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-36568",
      "aliases": [
        "BIT-moodle-2021-36568",
        "CVE-2021-36568",
        "GHSA-fm6m-fg23-67jq"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/moodle/moodle",
              "type": "GIT",
              "events": [
                {
                  "introduced": "270f52bf55acaf121cbae6643a8fa6545d545c3f"
                },
                {
                  "last_affected": "94f2d3fc4b974c5c7d500988c56b7ca15f58d7ec"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:moodle:moodle:3.9.7:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.9.7"
                      },
                      {
                        "last_affected": "3.9.7"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:moodle:moodle:3.10.4:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.10.4"
                      },
                      {
                        "last_affected": "3.10.4"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:moodle:moodle:3.11.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.11.0"
                      },
                      {
                        "last_affected": "3.11.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.10.4",
            "3.11.0",
            "3.9.7"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-36568.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:03.505951216Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERQ3NHVOK4ZXT4MS4LBQ2ZJHTON3LIMW/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PRI4ETMQ4DJR3TZUOOGPBQ32RBD5LNGC/",
        "https://drive.google.com/drive/folders/1_fO4BKpmD3avGYHSzvIXWs5owqVYgB1s?usp=sharing",
        "https://blog.hackingforce.com.br/en/cve-2021-36568/"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "35"
                  },
                  {
                    "last_affected": "35"
                  },
                  {
                    "introduced": "36"
                  },
                  {
                    "last_affected": "36"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-36568",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440270,
  "published_at": "2022-09-13T22:15:08.793+00:00"
}