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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Eventlet
  • Eventlet

No data.

No data.

References
Link Providers
https://github.com/eventlet/eventlet/commit/0bfebd1117d392559e25b4bfbfcc941754de88fb cve-icon cve-icon cve-icon
https://github.com/eventlet/eventlet/pull/1062 cve-icon cve-icon cve-icon
https://github.com/eventlet/eventlet/security/advisories/GHSA-hw6f-rjfj-j7j7 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-58068 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-58068 cve-icon
History

Tue, 02 Sep 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

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

Updated: 2025-09-02T13:51:35.797Z

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

Link: CVE-2025-58068

cve-icon Vulnrichment

Updated: 2025-09-02T13:50:18.375Z

cve-icon NVD

Status : Awaiting Analysis

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

Modified: 2025-09-02T15:55:35.520

Link: CVE-2025-58068

cve-icon Redhat

Severity : Moderate

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

Links: CVE-2025-58068 - Bugzilla