Wsgiserver 0.2 Cpython 3.10.4 Exploit [repack] -

) allows remote attackers to execute arbitrary shell commands via the /run_command/ endpoint if login requirements are bypassed Exploit-DB Directory Traversal (CVE-2021-40978) built-in development server (often identifying as WSGIServer/0.2

Older WSGI implementations often lack controls for modern threat landscapes.

Move to a production-grade, actively maintained WSGI server like Gunicorn or uWSGI . wsgiserver 0.2 cpython 3.10.4 exploit

Analyzing the Security Landscape of wsgiserver 0.2 on CPython 3.10.4

(common with Flask) often fail to sanitize user input before rendering templates. Vulnerability : User input is treated as code within PoC Payload ) allows remote attackers to execute arbitrary shell

To mitigate the risks associated with this vulnerability, the following steps can be taken:

Because CPython 3.10.4 processes system calls and memory objects with precise type tracking, exploiting raw buffer overflows is difficult; however, high-level or object injection remains highly viable if the server leaks unsanitized headers into downstream application frameworks. 3. Asymmetric Resource Exhaustion (Denial of Service) Vulnerability : User input is treated as code

The researchers who discovered the flaw, Keran Mu and Jianjun Chen from Tsinghua University, provided a clear HTTP/1.1 request that demonstrates the exploit:

Python 3.10 introduced strict type behaviors and deprecated older methods in the collections and socket modules.