{"cve":"CVE-2024-24815","nvd":{"published":"2024-02-07T16:15:47.753","modified":"2026-06-17T07:14:56.550","status":"Modified","description":"CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A cross-site scripting vulnerability has been discovered in the core HTML parsing module in versions of CKEditor4 prior to 4.24.0-lts. It may affect all editor instances that enabled full-page editing mode or enabled CDATA elements in Advanced Content Filtering configuration (defaults to `script` and `style` elements). The vulnerability allows attackers to inject malformed HTML content bypassing Advanced Content Filtering mechanism, which could result in executing JavaScript code. An attacker could abuse faulty CDATA content detection and use it to prepare an intentional attack on the editor. A fix is available in version 4.24.0-lts.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79"],"references":["https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dtd.html#property-S-cdata","https://ckeditor.com/docs/ckeditor4/latest/features/fullpage.html","https://ckeditor.com/docs/ckeditor4/latest/guide/dev_advanced_content_filter.html","https://github.com/ckeditor/ckeditor4/commit/8ed1a3c93d0ae5f49f4ecff5738ab8a2972194cb","https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-fq6h-4g8v-qqvm"],"products":["ckeditor:ckeditor"],"source":"nvd","synced_at":"2026-10-19T21:44:57.175229480+00:00"},"epss":{"cve":"CVE-2024-24815","score":0.00706,"percentile":0.53405,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-fq6h-4g8v-qqvm","url":"https://osv.dev/vulnerability/GHSA-fq6h-4g8v-qqvm","summary":"CKEditor4 Cross-site Scripting vulnerability caused by incorrect CDATA detection","modified":"2026-09-10T03:50:06.171222645Z","packages":[{"ecosystem":"npm","name":"ckeditor4","purl":"pkg:npm/ckeditor4","ranges":["<4.24.0-lts"],"fixed":["4.24.0-lts"]},{"ecosystem":"Packagist","name":"ckeditor/ckeditor","purl":"pkg:composer/ckeditor/ckeditor","ranges":["<4.24.0"],"fixed":["4.24.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}