CVE-2025-58068: Eventlet Eventlet Affected By HTTP Request Vulnerability

MODERATE
Advisory Identifier: GHSA-hw6f-rjfj-j7j7
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CWE-444
Published
Advisory Summary

CVE-2025-58068 is a MODERATE eventlet affected by http request vulnerability (CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')) affecting Eventlet libraries in the PyPI ecosystem. The issue involves eventlet affected by http request smuggling in unparsed trailers. Remediation is available by upgrading affected packages to version 0.40.3.

CVE-2025-58068 at a Glance

CVE Identifier CVE-2025-58068
GHSA Identifier GHSA-hw6f-rjfj-j7j7
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Affected Product Eventlet
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix CVE-2025-58068

To remediate this vulnerability, upgrade all affected Eventlet dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

eventlet fixed: 0.40.3 
pip install eventlet>=0.40.3
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show eventlet

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-58068, inspect your installed packages using pip:

pip show eventlet

Analyze the terminal output to locate any version of Eventlet in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.40.3), your application is affected.

Note: The pip show eventlet command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling'), where 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. In Eventlet, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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

CVE-2025-58068 Affected Eventlet Versions

1 component(s)
Fixed Versions:
0.40.3
Product / Package Ecosystem Affected Versions Fixed Version
eventlet
pypi/eventlet
PyPI
< 0.40.3
0.40.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/eventlet/eventlet/security/advisories/GHSA-hw6f-rjfj-j7j7
NVD — CVE-2025-58068 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-58068
Eventlet Source Repository REPOSITORY
https://github.com/eventlet/eventlet/pull/1062
Security Fix Commit FIX COMMIT
https://github.com/eventlet/eventlet/commit/0bfebd1117d392559e25b4bfbfcc941754de88fb
Eventlet Source Repository REPOSITORY
https://github.com/eventlet/eventlet
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2025/09/msg00003.html

Frequently Asked Questions

What is CVE-2025-58068?
CVE-2025-58068 is a security vulnerability in Eventlet involving Eventlet affected by HTTP request smuggling in unparsed trailers under CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling').
Which Eventlet versions are affected?
Affected versions include releases prior to 0.40.3 across affected packages: eventlet.
What version fixes CVE-2025-58068?
Upgrading to 0.40.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is eventlet affected?
Yes, eventlet is affected in releases prior to 0.40.3. Upgrade your dependency to 0.40.3 or later.
What CWE is associated with CVE-2025-58068?
CVE-2025-58068 is classified under CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') (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.).
How can I check PyPI dependencies for CVE-2025-58068?
Run the dependency tree command: 'pip show eventlet'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-hw6f-rjfj-j7j7",
  "modified" : "2025-11-04T16:22:43Z",
  "published" : "2025-08-29T20:08:24Z",
  "aliases" : [ "CVE-2025-58068" ],
  "summary" : "Eventlet affected by HTTP request smuggling in unparsed trailers",
  "details" : "### Impact\nThe Eventlet WSGI parser is vulnerable to HTTP Request Smuggling due to improper handling of HTTP trailer sections.\n\nThis vulnerability could enable attackers to:\n- Bypass front-end security controls\n- Launch targeted attacks against active site users\n- Poison web caches\n\n### Patches\nProblem has been patched in eventlet 0.40.3.\n\nThe patch just drops trailers. If a backend behind eventlet.wsgi proxy requires trailers, then this patch BREAKS your setup.\n\n### Workarounds\nDo not use eventlet.wsgi facing untrusted clients.\n\n### References\n- Patch https://github.com/eventlet/eventlet/pull/1062\n- This issue is similar to https://github.com/advisories/GHSA-9548-qrrj-x5pj",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "eventlet"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.40.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/eventlet/eventlet/security/advisories/GHSA-hw6f-rjfj-j7j7"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-58068"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/eventlet/eventlet/pull/1062"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/eventlet/eventlet/commit/0bfebd1117d392559e25b4bfbfcc941754de88fb"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/eventlet/eventlet"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2025/09/msg00003.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-444" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-08-29T20:08:24Z",
    "nvd_published_at" : "2025-08-29T22:15:32Z"
  }
}