{"id":"CVE-2021-26271","details":"It was possible to execute a ReDoS-type attack inside CKEditor 4 before 4.16 by persuading a victim to paste crafted text into the Styles input of specific dialogs (in the Advanced Tab for Dialogs plugin).","aliases":["GHSA-jv4c-7jqq-m34x"],"modified":"2026-08-27T11:47:16.110307124Z","published":"2021-01-26T21:15:12.860Z","database_specific":{"unresolved_ranges":[{"source":"CPE_RANGE","vendor_product":"oracle:application_express","cpes":["cpe:2.3:a:oracle:application_express:*:*:*:*:*:*:*:*"],"extracted_events":[{"fixed":"21.1.0"}]},{"source":"CPE_RANGE","vendor_product":"oracle:financial_services_analytical_applications_infrastructure","cpes":["cpe:2.3:a:oracle:financial_services_analytical_applications_infrastructure:*:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"8.0.6"},{"last_affected":"8.0.9"}]},{"extracted_events":[{"fixed":"9.2.6.0"}],"source":"CPE_RANGE","vendor_product":"oracle:jd_edwards_enterpriseone_tools","cpes":["cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*"]},{"extracted_events":[{"fixed":"21.9"}],"source":"CPE_RANGE","vendor_product":"oracle:siebel_ui_framework","cpes":["cpe:2.3:a:oracle:siebel_ui_framework:*:*:*:*:*:*:*:*"]},{"extracted_events":[{"introduced":"9.3.5"},{"last_affected":"9.3.5"},{"introduced":"9.3.6"},{"last_affected":"9.3.6"}],"source":"CPE_STRING","vendor_product":"oracle:agile_product_lifecycle_management","cpes":["cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.5:*:*:*:*:*:*:*","cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.6:*:*:*:*:*:*:*"]},{"cpes":["cpe:2.3:a:oracle:financial_services_analytical_applications_infrastructure:8.1.0:*:*:*:*:*:*:*","cpe:2.3:a:oracle:financial_services_analytical_applications_infrastructure:8.1.1:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"8.1.0"},{"last_affected":"8.1.0"},{"introduced":"8.1.1"},{"last_affected":"8.1.1"}],"source":"CPE_STRING","vendor_product":"oracle:financial_services_analytical_applications_infrastructure"},{"extracted_events":[{"introduced":"12.2.1.3.0"},{"last_affected":"12.2.1.3.0"},{"introduced":"12.2.1.4.0"},{"last_affected":"12.2.1.4.0"}],"source":"CPE_STRING","vendor_product":"oracle:webcenter_sites","cpes":["cpe:2.3:a:oracle:webcenter_sites:12.2.1.3.0:*:*:*:*:*:*:*","cpe:2.3:a:oracle:webcenter_sites:12.2.1.4.0:*:*:*:*:*:*:*"]}]},"references":[{"type":"ADVISORY","url":"https://ckeditor.com/blog/CKEditor-4.16-with-improved-image-pasting-High-Contrast-support-and-a-new-color-API/#security-comes-first"},{"type":"ADVISORY","url":"https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-416"},{"type":"FIX","url":"https://www.oracle.com//security-alerts/cpujul2021.html"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuoct2021.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ckeditor/ckeditor4","events":[{"introduced":"769d96134bcf29f5d3d870e25797ce9b9dc8289e"},{"fixed":"17a1555f7fbb0e83f737c9efe27650dca8dff36f"}],"database_specific":{"cpe":"cpe:2.3:a:ckeditor:ckeditor:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"4.0"},{"fixed":"4.16"}],"source":"CPE_RANGE"}}],"versions":["4.15.0","4.14.0","4.13.0","4.12.0","4.10.0","4.8.0","4.7.0","4.6.0","4.5.0","4.5.0-beta","4.4.1","4.4.0","4.2.3","4.2.2","4.2.1","4.2.0","4.2","4.1.0","4.1","4.1rc","4.0.1","4.0.0","4.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26271.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/ckeditor/ckeditor4-releases","events":[{"introduced":"870a561110a23435d78eda377400dca7f64d3bd3"},{"fixed":"a393696ad5523e9f5ffab76e9b653240c49c770b"}],"database_specific":{"extracted_events":[{"introduced":"4.0"},{"fixed":"4.16"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:ckeditor:ckeditor:*:*:*:*:*:*:*:*"}}],"versions":["standard/4.15.1","standard/4.15.0","standard/4.14.1","standard/4.14.0","standard/4.13.1","standard/4.13.0","standard/4.12.1","standard/4.12.0","standard/4.11.4","standard/4.11.3","standard/4.11.2","standard/4.11.1","standard/4.11.0","standard/4.10.1","standard/4.10.0","standard/4.9.2","standard/4.9.1","standard/4.9.0","standard/4.8.0","standard/4.7.3","standard/4.7.2","standard/4.7.1","standard/4.7.0","standard/4.6.2","standard/4.6.1","standard/4.6.0","standard/4.5.11","standard/4.5.10","standard/4.5.9","standard/4.5.8","standard/4.5.7","standard/4.5.6","standard/4.5.5","standard/4.5.4","standard/4.5.3","standard/4.5.2","standard/4.5.1","standard/4.5.0","standard/4.4.8","standard/4.4.7","standard/4.4.6","standard/4.4.5","standard/4.4.4","standard/4.4.3","standard/4.4.2","standard/4.4.1","standard/4.4.0","standard/4.3.5","standard/4.3.4","standard/4.3.3","4.3.2/standard","4.3.1/standard","4.3.0/standard","4.2.3/standard","4.2.2/standard","4.2.1/standard","4.2/standard","4.1.3/standard","4.1.2/standard","4.1.1/standard","4.1/standard","4.1rc/standard","4.0.1/standard","4.0/standard"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26271.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}