Vulnerability Information
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Vulnerability Title
Kan is Vulnerable to Unauthenticated SSRF via Attachment Download Endpoint
Vulnerability Description
Kan is an open-source project management tool. In versions 0.5.4 and below, the /api/download/attatchment endpoint has no authentication and no URL validation. The Attachment Download endpoint accepts a user-supplied URL query parameter and passes it directly to fetch() server-side, and returns the full response body. An unauthenticated attacker can use this to make HTTP requests from the server to internal services, cloud metadata endpoints, or private network resources. This issue has been fixed in version 0.5.5. To workaround this issue, block or restrict access to /api/download/attatchment at the reverse proxy level (nginx, Cloudflare, etc.).
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Vulnerability Type
服务端请求伪造(SSRF)
Vulnerability Title
kan 代码问题漏洞
Vulnerability Description
kan是kanbn开源的一个开源项目管理工具。 Kan 0.5.4及之前版本存在代码问题漏洞，该漏洞源于/api/download/attatchment端点缺少身份验证和URL验证，可能导致未经身份验证的攻击者从服务器发起HTTP请求。
CVSS Information
N/A
Vulnerability Type
N/A