GHSA-hw6f-rjfj-j7j7
Eventlet affected by HTTP request smuggling in unparsed trailers
Packages
Details
As written in the advisory (Markdown source, shown as plain text).
### Impact
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
- Poison web caches
### Patches
Problem has been patched in eventlet 0.40.3.
The patch just drops trailers. If a backend behind eventlet.wsgi proxy requires trailers, then this patch BREAKS your setup.
### Workarounds
Do not use eventlet.wsgi facing untrusted clients.
### References
- Patch https://github.com/eventlet/eventlet/pull/1062
- This issue is similar to https://github.com/advisories/GHSA-9548-qrrj-x5pj
References
External links from the advisory. They lead to third-party sites.
- https://github.com/eventlet/eventlet/security/advisories/GHSA-hw6f-rjfj-j7j7
- https://nvd.nist.gov/vuln/detail/CVE-2025-58068
- https://github.com/eventlet/eventlet/pull/1062
- https://github.com/eventlet/eventlet/commit/0bfebd1117d392559e25b4bfbfcc941754de88fb
- https://github.com/eventlet/eventlet
- https://lists.debian.org/debian-lts-announce/2025/09/msg00003.html