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I. Basic Information for CVE-2021-39173
Vulnerability Information

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Vulnerability Title
Forced reinstall
Source: NVD (National Vulnerability Database)
Vulnerability Description
Cachet is an open source status page system. Prior to version 2.5.1 authenticated users, regardless of their privileges (User or Admin), can trick Cachet and install the instance again, leading to arbitrary code execution on the server. This issue was addressed in version 2.5.1 by improving the middleware `ReadyForUse`, which now performs a stricter validation of the instance name. As a workaround, only allow trusted source IP addresses to access to the administration dashboard.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不正确的类型转换
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cachet 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Github Cachet是一个应用软件。一个开源状态页面系统。 Cachet 存在安全漏洞,该漏洞源于在2.5.1版本之前,经过身份验证的用户,无论其权限(User或Admin)如何,都可以欺骗Cachet并再次安装实例。攻击者可利用该漏洞导致任意代码在服务器上执行。
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
fiveaiCachet < 2.5.1 -
II. Public POCs for CVE-2021-39173
#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 8107 chars
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III. Intelligence Information for CVE-2021-39173
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IV. Related Vulnerabilities
V. Comments for CVE-2021-39173

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