Security advisory

{
  "id": "4845ec1dcbe4fd98540a8d5ddb067a8ed9235bc6e6258377720289e7bdeedde0",
  "url": "https://osv.dev/vulnerability/CVE-2020-13665",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-13665",
    "summary": "Access bypass vulnerability in Drupal Core allows JSON:API when JSON:API is in read/write mode. Only sites that have the read_only set to FALSE under jsonapi.settings config are vulnerable. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.x versions prior to 9.0.1.",
    "evidence": "osv:CVE-2020-13665",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2020-13665",
      "aliases": [
        "BIT-drupal-2020-13665",
        "CVE-2020-13665",
        "GHSA-wxqp-jwc9-g39x"
      ],
      "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/drupal/drupal",
              "type": "GIT",
              "events": [
                {
                  "introduced": "f2b59e3ae8097ea01d15c708f1267b73794399c0"
                },
                {
                  "fixed": "d6ae9678b5c51ab3d7cb63746abacba61bb6cdb8"
                },
                {
                  "introduced": "a412ca41cfc0d954fe3cb2dd982dc6ca049b1c70"
                },
                {
                  "fixed": "4aff4012073fb3bf45218b8af9f2eadc4ea69470"
                },
                {
                  "introduced": "d62812dc17ce593beb2ccd4cdbee1a76c95e3fd7"
                },
                {
                  "fixed": "32d737c546d027c22a5d4eb25a7cea83ea1f5402"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.8.0"
                      },
                      {
                        "fixed": "8.8.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.9.0"
                      },
                      {
                        "fixed": "8.9.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "9.0.0"
                      },
                      {
                        "fixed": "9.0.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.8.7",
            "8.9.0",
            "9.0.0",
            "8.8.5",
            "8.8.3",
            "8.8.2",
            "8.8.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13665.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:15.461895297Z",
      "provider": "osv",
      "references": [
        "https://www.drupal.org/sa-core-2020-006"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-13665",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 429159,
  "published_at": "2021-05-05T15:15:08.26+00:00"
}