Security advisory

{
  "id": "735b66f374316886dbf60b5a538dabc30a1301601a994cd7a55bed2570119de5",
  "url": "https://osv.dev/vulnerability/CVE-2021-31522",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-31522",
    "summary": "Kylin can receive user input and load any class through Class.forName(...). This issue affects Apache Kylin 2 version 2.6.6 and prior versions; Apache Kylin 3 version 3.1.2 and prior versions; Apache Kylin 4 version 4.0.0 and prior versions.",
    "evidence": "osv:CVE-2021-31522",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-31522",
      "aliases": [
        "CVE-2021-31522",
        "GHSA-q656-g2x3-8cgh"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/kylin",
              "type": "GIT",
              "events": [
                {
                  "introduced": "375fd807c281d8c5deff0620747c806be2019782"
                },
                {
                  "last_affected": "ddd5f8ecd4157b8f889b047e421dd9cfae7e1142"
                },
                {
                  "introduced": "c75242a9b55fd57a3a58d92a2dfa9f21cfe4eebc"
                },
                {
                  "fixed": "2fb07e6b1bf0f716090f3b73004c5afe0096b9be"
                },
                {
                  "introduced": "aa6d582c0a96fdf31e85791f86850cfc00a7644f"
                },
                {
                  "last_affected": "546381392c55136310f591969e5a3f3db6074988"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:kylin:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "last_affected": "2.6.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:kylin:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "fixed": "3.1.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:kylin:4.0.0:-:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0-NA"
                      },
                      {
                        "last_affected": "4.0.0-NA"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:kylin:4.0.0:alpha:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0-alpha"
                      },
                      {
                        "last_affected": "4.0.0-alpha"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:kylin:4.0.0:beta:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0-beta"
                      },
                      {
                        "last_affected": "4.0.0-beta"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.0.0-NA",
            "4.0.0-alpha",
            "4.0.0-beta"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-31522.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:03.167574109Z",
      "provider": "osv",
      "references": [
        "https://lists.apache.org/thread/hh5crx3yr701zd8wtpqo1mww2rlkvznw"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-31522",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440203,
  "published_at": "2022-01-06T13:15:08.027+00:00"
}