Eventlet up to 0.40.2 on Python WSGI Parser request smuggling

CVSS Meta Temp Score
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CTI Interest Score
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8.0$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Eventlet up to 0.40.2 on Python. This vulnerability affects unknown code of the component WSGI Parser. The manipulation results in request smuggling. This vulnerability is cataloged as CVE-2025-58068. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in Eventlet up to 0.40.2 on Python. Affected is an unknown code block of the component WSGI Parser. The manipulation with an unknown input leads to a request smuggling vulnerability. CWE is classifying the issue as CWE-444. The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-58068 since 08/22/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 264662 (SUSE SLED15 / SLES15 / openSUSE 15 Security Update : python-eventlet (SUSE-SU-2025:03202-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.40.3 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (264662) and CERT Bund (WID-SEC-2026-0408). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Red Hat Enterprise Linux
  • Red Hat OpenStack

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Request smuggling
CWE: CWE-444
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 264662
Nessus Name: SUSE SLED15 / SLES15 / openSUSE 15 Security Update : python-eventlet (SUSE-SU-2025:03202-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Eventlet 0.40.3

Timelineinfo

08/22/2025 CVE reserved
08/29/2025 +7 days Advisory disclosed
08/29/2025 +0 days VulDB entry created
02/18/2026 +173 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2025-58068 (🔒)
GCVE (CVE): GCVE-0-2025-58068
GCVE (VulDB): GCVE-100-321984
CERT Bund: WID-SEC-2026-0408 - Red Hat OpenStack Services auf OpenShift (python-eventlet, keystone): Mehrere Schwachstellen

Entryinfo

Created: 08/29/2025 23:39
Updated: 02/18/2026 17:19
Changes: 08/29/2025 23:39 (66), 09/13/2025 19:47 (2), 09/25/2025 07:16 (11), 02/13/2026 10:08 (7), 02/18/2026 17:19 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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