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.
History

Sun, 31 Aug 2025 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Eventlet
Eventlet eventlet
Vendors & Products Eventlet
Eventlet eventlet

Sat, 30 Aug 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

threat_severity

Moderate


Fri, 29 Aug 2025 21:30:00 +0000

Type Values Removed Values Added
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.
Title Eventlet affected by HTTP request smuggling in unparsed trailers
Weaknesses CWE-444
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-08-29T21:12:24.534Z

Reserved: 2025-08-22T14:30:32.223Z

Link: CVE-2025-58068

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-08-29T22:15:32.327

Modified: 2025-08-29T22:15:32.327

Link: CVE-2025-58068

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-08-29T21:12:24Z

Links: CVE-2025-58068 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-08-31T08:41:34Z