CVE-2025-58068
Description
Eventlet is a concurrent networking library for Python. Prior to version 0.40.3, the Eventlet WSGI parser is vulnerable to HTTP Request Smuggling due to improper handling of HTTP trailer sections. This vulnerability could enable attackers to, bypass front-end security controls, launch targeted attacks against active site users, and poison web caches. This problem has been patched in Eventlet 0.40.3 by dropping trailers which is a breaking change if a backend behind eventlet.wsgi proxy requires trailers. A workaround involves not using eventlet.wsgi facing untrusted clients.
How to fix
- eventlet eventlet0.40.3 or later
- eventlet0.40.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| eventlet eventlet | v < 0.40.3 | 0.40.3 |
| eventletPyPI | v < 0.40.3 | 0.40.3 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.