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CVE-2024-43407— Code Snippet GeSHi plugin has reflected cross-site scripting (XSS) vulnerability

Quick assessment

Affected
ckeditor ckeditor4
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CKEditor4是CKEditor开源的一个企业级 WYSIWYG 编辑器。 CKEditor4 4.25.0-lts之前版本存在安全漏洞。攻击者利用该漏洞可以编写恶意脚本，该脚本可以通过向托管在 PHP Web 服务器上的 GeSHi 库发送请求来执行。

CVSS 6.1 · Medium EPSS 0.45% · P37
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I. Basic Information for CVE-2024-43407

Vulnerability Information
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Vulnerability Title
Code Snippet GeSHi plugin has reflected cross-site scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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 The GeSHi library is no longer actively maintained.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 This change aims to maintain a secure environment and reduce the risk of any security incidents related to outdated or unsupported software.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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
CKEditor4 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CKEditor4是CKEditor开源的一个企业级 WYSIWYG 编辑器。 CKEditor4 4.25.0-lts之前版本存在安全漏洞。攻击者利用该漏洞可以编写恶意脚本，该脚本可以通过向托管在 PHP Web 服务器上的 GeSHi 库发送请求来执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ckeditor ckeditor4 < 4.25.0-lts -

II. Public POCs for CVE-2024-43407

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III. Intelligence Information for CVE-2024-43407

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Patches & Fixes for CVE-2024-43407 (2)

Vendor Advisories for CVE-2024-43407 (1)

IV. Related Vulnerabilities

Same product: ckeditor4
Same vendor: ckeditor
Same weakness: CWE-79

V. Comments for CVE-2024-43407

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