CVE-2020-4070— Cross-site Scripting in CSS Validator
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I. Basic Information for CVE-2020-4070
Vulnerability Information
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Vulnerability Title
Cross-site Scripting in CSS Validator
Source: NVD (National Vulnerability Database)
Vulnerability Description
In CSS Validator less than or equal to commit 54d68a1, there is a cross-site scripting vulnerability in handling URIs. A user would have to click on a specifically crafted validator link to trigger it. This has been patched in commit e5c09a9.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
CSS Validator 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CSS Validator是万维网（W3C）联盟的一款CSS（层叠样式表）验证程序。 CSS Validator 54d68a1及之前版本中存在跨站脚本漏洞。该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。
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 |
|---|---|---|---|---|
| World Wide Web Consortium (W3C) | CSS Validator | <= 54d68a1 | - |
II. Public POCs for CVE-2020-4070
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://github.com/w3c/css-validator/security/advisories/GHSA-wf36-7w73-rh8cx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2020-4070
IV. Related Vulnerabilities
Same product: CSS Validator
Same weakness: CWE-79
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V. Comments for CVE-2020-4070
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