{"id":"CVE-2020-13665","aliases":["BIT-drupal-2020-13665","GHSA-wxqp-jwc9-g39x"],"url":"https://o3.security/vulnerability/CVE-2020-13665","summary":"Drupal Core Access bypass vulnerability","details":"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.","published":"2021-05-05T15:15:08.260Z","modified":"2026-10-24T10:30:15.461895297Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.01275,"percentile":0.67168,"asOf":"2026-08-08"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"drupal/core","fixedVersion":"8.8.8"},{"ecosystem":"Packagist","name":"drupal/core","fixedVersion":"8.9.1"},{"ecosystem":"Packagist","name":"drupal/core","fixedVersion":"9.0.1"},{"ecosystem":"Packagist","name":"drupal/drupal","fixedVersion":"8.8.8"},{"ecosystem":"Packagist","name":"drupal/drupal","fixedVersion":"8.9.1"},{"ecosystem":"Packagist","name":"drupal/drupal","fixedVersion":"9.0.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://www.drupal.org/sa-core-2020-006"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13665"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13665.yaml"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13665.yaml"},{"type":"PACKAGE","url":"https://github.com/drupal/core"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:30:15.461895297Z"}}