{"cve":"CVE-2024-43407","nvd":{"published":"2024-08-21T15:15:09.397","modified":"2026-06-17T07:50:59.233","status":"Analyzed","description":"CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A potential vulnerability has been discovered in CKEditor 4 Code Snippet GeSHi plugin. The vulnerability allowed a reflected XSS attack by exploiting a flaw in the GeSHi syntax highlighter library hosted by the victim. The GeSHi library was included as a vendor dependency in CKEditor 4 source files. In a specific scenario, an attacker could craft a malicious script that could be executed by sending a request to the GeSHi library hosted on a PHP web server. The GeSHi library is no longer actively maintained. Due to the lack of ongoing support and updates, potential security vulnerabilities have been identified with its continued use. To mitigate these risks and enhance the overall security of the CKEditor 4, we have decided to completely remove the GeSHi library as a dependency. This change aims to maintain a secure environment and reduce the risk of any security incidents related to outdated or unsupported software. The fix is be available in version 4.25.0-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://github.com/ckeditor/ckeditor4/commit/71072c9f7f263329841bd38e7e5309074c82ef94","https://github.com/ckeditor/ckeditor4/commit/951e7d75fcbcaa2590b0719fb0bb0dd0539ca6fa","https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7r32-vfj5-c2jv"],"products":["ckeditor:ckeditor"],"source":"nvd","synced_at":"2026-10-19T21:54:16.205165117+00:00"},"epss":{"cve":"CVE-2024-43407","score":0.0045,"percentile":0.39101,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-7r32-vfj5-c2jv","url":"https://osv.dev/vulnerability/GHSA-7r32-vfj5-c2jv","summary":"Code Snippet GeSHi plugin in CKEditor 4 has reflected cross-site scripting (XSS) vulnerability","modified":"2025-02-18T19:38:09.951044Z","packages":[{"ecosystem":"npm","name":"ckeditor4","purl":"pkg:npm/ckeditor4","ranges":["<4.25.0"],"fixed":["4.25.0"]},{"ecosystem":"Packagist","name":"ckeditor/ckeditor","purl":"pkg:composer/ckeditor/ckeditor","ranges":["<4.25.0"],"fixed":["4.25.0"]}]}],"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."]}