fengmk2

6 exploits Active since Aug 2018
CVE-2018-3786 WRITEUP CRITICAL WRITEUP
egg-scripts < 2.8.1 - OS Command Injection via Command Line Argument
A command injection vulnerability in egg-scripts <v2.8.1 allows arbitrary shell command execution through a maliciously crafted command line argument.
CVSS 9.8
CVE-2025-25200 WRITEUP HIGH WRITEUP
Koa <0.21.2, 1.7.1, 2.15.4, 3.0.0-alpha.3 - DoS
Koa is expressive middleware for Node.js using ES2017 async functions. Prior to versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3, Koa uses an evil regex to parse the `X-Forwarded-Proto` and `X-Forwarded-Host` HTTP headers. This can be exploited to carry out a Denial-of-Service attack. Versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3 fix the issue.
CVSS 7.5
CVE-2025-25200 WRITEUP HIGH WRITEUP
Koa <0.21.2, 1.7.1, 2.15.4, 3.0.0-alpha.3 - DoS
Koa is expressive middleware for Node.js using ES2017 async functions. Prior to versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3, Koa uses an evil regex to parse the `X-Forwarded-Proto` and `X-Forwarded-Host` HTTP headers. This can be exploited to carry out a Denial-of-Service attack. Versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3 fix the issue.
CVSS 7.5
CVE-2025-25200 WRITEUP HIGH WRITEUP
Koa <0.21.2, 1.7.1, 2.15.4, 3.0.0-alpha.3 - DoS
Koa is expressive middleware for Node.js using ES2017 async functions. Prior to versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3, Koa uses an evil regex to parse the `X-Forwarded-Proto` and `X-Forwarded-Host` HTTP headers. This can be exploited to carry out a Denial-of-Service attack. Versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3 fix the issue.
CVSS 7.5
CVE-2020-7623 WRITEUP CRITICAL WRITEUP
jscover < 1.0.0 - OS Command Injection via Source Argument
jscover through 1.0.0 is vulnerable to Command Injection. It allows execution of arbitrary command via the source argument.
CVSS 9.8
CVE-2023-49803 WRITEUP HIGH WRITEUP
@koa/cors < 5.0.0 - Origin Validation Error via Missing Allowed Origin Check
@koa/cors npm provides Cross-Origin Resource Sharing (CORS) for koa, a web framework for Node.js. Prior to version 5.0.0, the middleware operates in a way that if an allowed origin is not provided, it will return an `Access-Control-Allow-Origin` header with the value of the origin from the request. This behavior completely disables one of the most crucial elements of browsers - the Same Origin Policy (SOP), this could cause a very serious security threat to the users of this middleware. If such behavior is expected, for instance, when middleware is used exclusively for prototypes and not for production applications, it should be heavily emphasized in the documentation along with an indication of the risks associated with such behavior, as many users may not be aware of it. Version 5.0.0 fixes this vulnerability.
CVSS 8.6