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CVE-2023-36806— Contao cross site scripting vulnerability via input unit widget

Quick assessment

Affected
contao contao
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.

Contao是一套采用PHP开发的开源内容管理系统（CMS）。该系统支持搜索引擎、权限管理和CSS框架等。 Contao存在跨站脚本漏洞，该漏洞源于不受信任的后端用户有可能向后端的标题字段注入恶意代码。

CVSS 6.5 · Medium EPSS 0.64% · P49

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-36806

Vulnerability Information
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Vulnerability Title
Contao cross site scripting vulnerability via input unit widget
Source: CVE Program / CVE List V5
Vulnerability Description
Contao is an open source content management system. Starting in version 4.0.0 and prior to versions 4.9.42, 4.13.28, and 5.1.10, it is possible for untrusted backend users to inject malicious code into headline fields in the back end, which will be executed both in the element preview (back end) and on the website (front end). Installations are only affected if there are untrusted back end users who have the rights to modify headline fields, or other fields using the input unit widget. Contao 4.9.42, 4.13.28, and 5.1.10 have a patch for this issue. As a workaround, disable the login for all untrusted back end users.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
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
Contao 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Contao是一套采用PHP开发的开源内容管理系统（CMS）。该系统支持搜索引擎、权限管理和CSS框架等。 Contao存在跨站脚本漏洞，该漏洞源于不受信任的后端用户有可能向后端的标题字段注入恶意代码。
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
contao contao >= 4.0.0, < 4.9.42 -

II. Public POCs for CVE-2023-36806

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III. Intelligence Information for CVE-2023-36806

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Patches & Fixes for CVE-2023-36806 (3)

Vendor Advisories for CVE-2023-36806 (2)

IV. Related Vulnerabilities

Same product: contao
Same vendor: contao
Same weakness: CWE-79

V. Comments for CVE-2023-36806

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