{"id":"CVE-2021-41164","title":"CKEditor4 is an open source WYSIWYG HTML editor","summary":"CKEditor4 is an open source WYSIWYG HTML editor. In affected versions a vulnerability has been discovered in the Advanced Content Filter (ACF) module and may affect all plugins used by CKEditor 4. The vulnerability allowed to inject malf…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L","cwe":["CWE-79","CWE-79"],"vendor":"ckeditor","product":"ckeditor","affected":["ckeditor >= 4.0, < 4.17.0","drupal >= 8.9.0, < 8.9.20","drupal >= 9.1.0, < 9.1.14","drupal >= 9.2.0, < 9.2.9","banking_apis >= 18.1, <= 18.3","banking_apis = 19.1","banking_apis = 19.2","banking_apis = 20.1","banking_apis = 21.1","banking_digital_experience >= 18.1, <= 18.3","banking_digital_experience = 19.1","banking_digital_experience = 19.2","banking_digital_experience = 20.1","banking_digital_experience = 21.1","agile_product_lifecycle_management = 9.3.6","application_express < 22.1","commerce_guided_search = 11.3.2","peoplesoft_enterprise_peopletools = 8.58","peoplesoft_enterprise_peopletools = 8.59","webcenter_portal = 12.2.1.3.0","webcenter_portal = 12.2.1.4.0","fedora = 36","fedora = 37"],"patched":["ckeditor 4.17.0","drupal 9.2.9","application_express 22.1"],"published":"2021-11-17","updated":"2026-08-25","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-41164","references":[{"url":"https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-417","label":"security-advisories@github.com"},{"url":"https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-pvmx-g8h5-cprj","label":"security-advisories@github.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VR76VBN5GW5QUBJFHVXRX36UZ6YTCMW6/","label":"security-advisories@github.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WOZGMCYDB2OKKULFXZKM6V7JJW4ZZHJP/","label":"security-advisories@github.com"},{"url":"https://www.drupal.org/sa-core-2021-011","label":"security-advisories@github.com"},{"url":"https://www.oracle.com/security-alerts/cpuapr2022.html","label":"security-advisories@github.com"},{"url":"https://www.oracle.com/security-alerts/cpujan2022.html","label":"security-advisories@github.com"},{"url":"https://www.oracle.com/security-alerts/cpujul2022.html","label":"security-advisories@github.com"},{"url":"https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-417","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-pvmx-g8h5-cprj","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VR76VBN5GW5QUBJFHVXRX36UZ6YTCMW6/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WOZGMCYDB2OKKULFXZKM6V7JJW4ZZHJP/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.drupal.org/sa-core-2021-011","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpuapr2022.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpujan2022.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpujul2022.html","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.01346,"epssPercentile":0.69753,"ingestedAt":"2026-08-25T17:29:31.819Z","slug":"CVE-2021-41164","body":"## Overview\n\nCKEditor4 is an open source WYSIWYG HTML editor. In affected versions a vulnerability has been discovered in the Advanced Content Filter (ACF) module and may affect all plugins used by CKEditor 4. The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.17.0. The problem has been recognized and patched. The fix will be available in version 4.17.0.\n\n## Affected\n\n- `ckeditor >= 4.0, < 4.17.0`\n- `drupal >= 8.9.0, < 8.9.20`\n- `drupal >= 9.1.0, < 9.1.14`\n- `drupal >= 9.2.0, < 9.2.9`\n- `banking_apis >= 18.1, <= 18.3`\n- `banking_apis = 19.1`\n- `banking_apis = 19.2`\n- `banking_apis = 20.1`\n- `banking_apis = 21.1`\n- `banking_digital_experience >= 18.1, <= 18.3`\n- `banking_digital_experience = 19.1`\n- `banking_digital_experience = 19.2`\n- `banking_digital_experience = 20.1`\n- `banking_digital_experience = 21.1`\n- `agile_product_lifecycle_management = 9.3.6`\n- `application_express < 22.1`\n- `commerce_guided_search = 11.3.2`\n- `peoplesoft_enterprise_peopletools = 8.58`\n- `peoplesoft_enterprise_peopletools = 8.59`\n- `webcenter_portal = 12.2.1.3.0`\n- `webcenter_portal = 12.2.1.4.0`\n- `fedora = 36`\n- `fedora = 37`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `ckeditor 4.17.0`\n- `drupal 9.2.9`\n- `application_express 22.1`","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.3,"exploitation":0,"ransomware":0},"changes":[]}