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I. Basic Information for CVE-2021-39195
Vulnerability Information

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Vulnerability Title
Server-Side Request Forgery vulnerability in misskey
Source: NVD (National Vulnerability Database)
Vulnerability Description
Misskey is an open source, decentralized microblogging platform. In affected versions a Server-Side Request Forgery vulnerability exists in "Upload from URL" and remote attachment handling. This could result in the disclosure of non-public information within the internal network. This has been fixed in 12.90.0. However, if you are using a proxy, you will need to take additional measures. As a workaround this exploit may be avoided by appropriately restricting access to private networks from the host where the application is running.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Misskey 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Misskey是一套微型博客平台。 Misskey存在代码问题漏洞,该漏洞源于软件中“从URL上传”和远程附件处理存在服务器端请求伪造漏洞。这可能导致内部网络的非公开信息的泄露。
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 < 12.90.0 -
II. Public POCs for CVE-2021-39195
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III. Intelligence Information for CVE-2021-39195
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