Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Eventlet | Eventlet | < 0.40.3 |
Related Weaknesses (CWE)
References
- https://github.com/eventlet/eventlet/commit/0bfebd1117d392559e25b4bfbfcc941754dePatch
- https://github.com/eventlet/eventlet/pull/1062Issue Tracking
- https://github.com/eventlet/eventlet/security/advisories/GHSA-hw6f-rjfj-j7j7Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2025/09/msg00003.html
FAQ
What is CVE-2025-58068?
CVE-2025-58068 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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. Thi...
How severe is CVE-2025-58068?
CVE-2025-58068 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2025-58068?
Check the references section above for vendor advisories and patch information. Affected products include: Eventlet Eventlet.