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I. Basic Information for CVE-2021-39169
Vulnerability Information

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Vulnerability Title
XSS vulnerability using dialog
Source: NVD (National Vulnerability Database)
Vulnerability Description
Misskey is a decentralized microblogging platform. In versions of Misskey prior to 12.51.0, malicious actors can use the web client built-in dialog to display a malicious string, leading to cross-site scripting (XSS). XSS could compromise the API request token. This issue has been fixed in version 12.51.0. There are no known workarounds aside from upgrading.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
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
Misskey 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Misskey是一套微型博客平台。 Misskey 12.51.0之前版本存在跨站脚本漏洞,该漏洞源于Web客户端的内置对话框对于用户输入没有进行有效的验证与转义。攻击者可以在对话框显示恶意字符串,并利用跨站脚本攻击破坏API的请求令牌。
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
VendorProductAffected VersionsCPESubscribe
misskey-devmisskey < 12.51.0 -
II. Public POCs for CVE-2021-39169
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III. Intelligence Information for CVE-2021-39169
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IV. Related Vulnerabilities
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