{"id":"CVE-2020-13664","aliases":["BIT-drupal-2020-13664","DRUPAL-CORE-2020-005","GHSA-x72f-ggjw-v5xh"],"url":"https://o3.security/vulnerability/CVE-2020-13664","summary":"Drupal Core Arbitrary PHP code execution vulnerability","details":"Arbitrary PHP code execution vulnerability in Drupal Core under certain circumstances. An attacker could trick an administrator into visiting a malicious site that could result in creating a carefully named directory on the file system. With this directory in place, an attacker could attempt to brute force a remote code execution vulnerability. Windows servers are most likely to be affected. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.1 versions prior to 9.0.1.","published":"2021-05-05T15:15:08.227Z","modified":"2026-07-08T16:26:49.570715Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"epss":null,"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-2020-005"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T16:26:49.570715Z"}}