{"id":"CVE-2020-9281","aliases":["BIT-drupal-2020-9281","EUVD-2021-1200","GHSA-vcjf-mgcg-jxjq","UBUNTU-CVE-2020-9281","USN-5340-1","USN-5340-2"],"status":"published","title":"CKEditor 4.0 vulnerability in the HTML Data Processor","description":"A cross-site scripting (XSS) vulnerability in the HTML Data Processor for CKEditor 4.0 before 4.14 allows remote attackers to inject arbitrary web script through a crafted \"protected\" comment (with the cke_protected syntax).","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.04308,"percentile":0.91231,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2020-03-07T00:02:27Z","modified":"2026-10-24T10:50:39Z","fixes":[{"ecosystem":"npm","package":"ckeditor4","fixed_in":["4.14.0"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"drupal","fixed_in":["8.7.12","8.8.4"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"ckeditor","fixed_in":["4.5.7+dfsg-2ubuntu0.16.04.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"ckeditor","fixed_in":["4.5.7+dfsg-2ubuntu0.18.04.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"ckeditor","fixed_in":["4.12.1+dfsg-1ubuntu0.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"ckeditor4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.14.0"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"drupal","ranges":[{"type":"SEMVER","events":[{"introduced":"8.7.0"},{"fixed":"8.7.12"},{"introduced":"8.8.0"},{"fixed":"8.8.4"}]}]},{"source":"osv","ecosystem":"npm","package":"ckeditor4","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.14.0"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"ckeditor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.7+dfsg-2ubuntu0.16.04.1~esm1"}]}],"versions":["4.4.4+dfsg1-3","4.5.6+dfsg-1","4.5.7+dfsg-1","4.5.7+dfsg-2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"ckeditor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.7+dfsg-2ubuntu0.18.04.1"}]}],"versions":["4.5.7+dfsg-2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"ckeditor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.12.1+dfsg-1ubuntu0.1"}]}],"versions":["4.11.1+dfsg-1","4.12.1+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"ckeditor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.7+dfsg-2ubuntu0.18.04.1"}]}],"versions":["4.5.7+dfsg-2"],"bundled":6},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"ckeditor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.12.1+dfsg-1ubuntu0.1"}]}],"versions":["4.11.1+dfsg-1","4.12.1+dfsg-1"],"bundled":6},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"ckeditor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.7+dfsg-2ubuntu0.16.04.1~esm1"}]}],"versions":["4.4.4+dfsg1-3","4.5.6+dfsg-1","4.5.7+dfsg-1","4.5.7+dfsg-2"],"bundled":5}],"products":[{"vendor":"ckeditor","product":"ckeditor"},{"vendor":"drupal","product":"drupal"},{"vendor":"fedoraproject","product":"fedora"},{"vendor":"oracle","product":"agile_product_lifecycle_management"},{"vendor":"oracle","product":"application_express"},{"vendor":"oracle","product":"banking_enterprise_default_management"},{"vendor":"oracle","product":"banking_enterprise_default_managment"},{"vendor":"oracle","product":"jd_edwards_enterpriseone_tools"},{"vendor":"oracle","product":"peoplesoft_enterprise_peopletools"},{"vendor":"oracle","product":"siebel_apps_-_customer_order_management"},{"vendor":"oracle","product":"webcenter_portal"}],"references":[{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7OJ4BSS3VEAEXPNSOOUAXX6RDNECGZNO/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M4HHYQ6N452XTCIROFMJOTYEUWSB6FR4/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L322YA73LCV3TO7ORY45WQDAFJVNKXBE/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://www.oracle.com/security-alerts/cpuoct2020.html","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","advisory","fix","web"]},{"url":"https://github.com/ckeditor/ckeditor4","tags":["x_refsource_MISC","x_transferred","Product","Third Party Advisory","advisory","package","report"]},{"url":"https://www.oracle.com/security-alerts/cpujan2021.html","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","advisory","fix","web"]},{"url":"https://www.oracle.com/security-alerts/cpuApr2021.html","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","advisory","fix","web"]},{"url":"https://www.oracle.com/security-alerts/cpuoct2021.html","tags":["x_refsource_MISC","x_transferred","Not Applicable","Third Party Advisory","advisory","web"]},{"url":"https://www.oracle.com/security-alerts/cpujan2022.html","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9281","tags":["web","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7OJ4BSS3VEAEXPNSOOUAXX6RDNECGZNO/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L322YA73LCV3TO7ORY45WQDAFJVNKXBE/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M4HHYQ6N452XTCIROFMJOTYEUWSB6FR4/"},{"url":"https://github.com/advisories/GHSA-vcjf-mgcg-jxjq"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7OJ4BSS3VEAEXPNSOOUAXX6RDNECGZNO","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L322YA73LCV3TO7ORY45WQDAFJVNKXBE","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M4HHYQ6N452XTCIROFMJOTYEUWSB6FR4","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2020-9281","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5340-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-9281","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5340-2","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-9861","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-32808","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-32809","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-33829","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-37695","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-9281","description":"A cross-site scripting (XSS) vulnerability in the HTML Data Processor for CKEditor 4.0 before 4.14 allows remote attackers to inject arbitrary web script through a crafted \"protected\" comment (with the cke_protected syntax).","status":"published","published":"2020-03-07T00:02:27Z","modified":"2024-08-04T10:26:15.821Z","updated_at":"2026-11-02T14:35:49.538427Z"}],"euvd":[{"id":"EUVD-2021-1200","description":"A cross-site scripting (XSS) vulnerability in the HTML Data Processor for CKEditor 4.0 before 4.14 allows remote attackers to inject arbitrary web script through a crafted \"protected\" comment (with the cke_protected syntax).","status":"published","published":"2020-03-07T00:02:27Z","modified":"2024-08-04T10:26:15Z","updated_at":"2026-11-03T03:07:54.599277Z"}],"ghsa":[{"id":"GHSA-vcjf-mgcg-jxjq","title":"CKEditor 4.0 vulnerability in the HTML Data Processor","description":"A cross-site scripting (XSS) vulnerability in the HTML Data Processor for CKEditor 4.0 before 4.14.0 allows remote attackers to inject arbitrary web script through a crafted \"protected\" comment (with the cke_protected syntax).","status":"published","published":"2021-05-07T16:32:17Z","modified":"2023-03-31T18:24:19Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:36:49.768564Z"}],"nvd":[{"id":"CVE-2020-9281","description":"A cross-site scripting (XSS) vulnerability in the HTML Data Processor for CKEditor 4.0 before 4.14 allows remote attackers to inject arbitrary web script through a crafted \"protected\" comment (with the cke_protected syntax).","status":"published","published":"2020-03-07T01:15:15.517Z","modified":"2026-08-25T16:28:27.31Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:05:55.32877Z"}],"osv":[{"id":"CVE-2020-9281","description":"A cross-site scripting (XSS) vulnerability in the HTML Data Processor for CKEditor 4.0 before 4.14 allows remote attackers to inject arbitrary web script through a crafted \"protected\" comment (with the cke_protected syntax).","status":"published","published":"2020-03-07T01:15:15.517Z","modified":"2026-10-24T10:50:39.880618231Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:17.663289Z"},{"id":"GHSA-vcjf-mgcg-jxjq","title":"CKEditor 4.0 vulnerability in the HTML Data Processor","description":"A cross-site scripting (XSS) vulnerability in the HTML Data Processor for CKEditor 4.0 before 4.14.0 allows remote attackers to inject arbitrary web script through a crafted \"protected\" comment (with the cke_protected syntax).","status":"published","published":"2021-05-07T16:32:17Z","modified":"2023-12-06T01:00:42.36723Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:56.981655Z"},{"id":"UBUNTU-CVE-2020-9281","description":"A cross-site scripting (XSS) vulnerability in the HTML Data Processor for CKEditor 4.0 before 4.14 allows remote attackers to inject arbitrary web script through a crafted \"protected\" comment (with the cke_protected syntax).","status":"published","published":"2020-03-07T01:15:00Z","modified":"2026-02-04T03:20:14.432491Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:25.728622Z"},{"id":"BIT-drupal-2020-9281","description":"A cross-site scripting (XSS) vulnerability in the HTML Data Processor for CKEditor 4.0 before 4.14 allows remote attackers to inject arbitrary web script through a crafted \"protected\" comment (with the cke_protected syntax).","status":"published","published":"2024-03-06T10:55:38.98Z","modified":"2026-09-08T08:47:01.208580591Z","updated_at":"2026-11-02T15:28:29.563843Z"},{"id":"USN-5340-1","title":"ckeditor vulnerabilities","description":"Kyaw Min Thein discovered that CKEditor incorrectly handled\ncertain inputs. An attacker could possibly use this issue\nto execute arbitrary code. This issue only affects\nUbuntu 18.04 LTS. (CVE-2018-9861)\n\nMicha Bentkowski discovered that CKEditor incorrectly handled\ncertain inputs. An attacker could possibly use this issue to\nexecute arbitrary code. This issue only affects\nUbuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-9281)\n\nAnton Subbotin discovered that CKEditor incorrectly handled\ncertain inputs. An attacker could possibly use this issue to\nexecute arbitrary code. This issue only affects\nUbuntu 21.10. (CVE-2021-32808)\n\nAnton Subbotin discovered that CKEditor incorrectly handled\ncertain inputs. An attacker could possibly use this issue to\ninject arbitrary code. (CVE-2021-32809)\n\nOr Sahar discovered that CKEditor incorrectly handled certain\ninputs. An attacker could possibly use this issue to execute\narbitrary code. This issue only affects\nUbuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-33829)\n\nMika Kulmala discovered that CKEditor incorrectly handled\ncertain inputs. An attacker could possibly use this issue to\nexecute arbitrary code. (CVE-2021-37695)\n","status":"published","published":"2022-03-22T16:43:31Z","modified":"2026-04-27T16:19:04.04217959Z","updated_at":"2026-11-02T16:58:15.683829Z"},{"id":"USN-5340-2","title":"ckeditor vulnerabilities","description":"USN-5340-1 fixed several vulnerabilities in CKEditor.\nThis update provides the fixes for CVE-2018-9861, CVE-2020-9281,\nCVE-2021-32809, CVE-2021-33829 and CVE-2021-37695 for Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\nKyaw Min Thein discovered that CKEditor incorrectly handled\ncertain inputs. An attacker could possibly use this issue\nto execute arbitrary code. This issue only affects\nUbuntu 18.04 LTS. (CVE-2018-9861)\n\nMicha Bentkowski discovered that CKEditor incorrectly handled\ncertain inputs. An attacker could possibly use this issue to\nexecute arbitrary code. This issue only affects\nUbuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-9281)\n\nAnton Subbotin discovered that CKEditor incorrectly handled\ncertain inputs. An attacker could possibly use this issue to\nexecute arbitrary code. This issue only affects\nUbuntu 21.10. (CVE-2021-32808)\n\nAnton Subbotin discovered that CKEditor incorrectly handled\ncertain inputs. An attacker could possibly use this issue to\ninject arbitrary code. (CVE-2021-32809)\n\nOr Sahar discovered that CKEditor incorrectly handled certain\ninputs. An attacker could possibly use this issue to execute\narbitrary code. This issue only affects\nUbuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-33829)\n\nMika Kulmala discovered that CKEditor incorrectly handled\ncertain inputs. An attacker could possibly use this issue to\nexecute arbitrary code. (CVE-2021-37695)\n","status":"published","published":"2022-03-23T08:57:25Z","modified":"2026-06-25T13:31:05.424927326Z","updated_at":"2026-11-02T16:58:15.683829Z"}]}}