---
id: CVE-2025-58068
aliases:
  - GHSA-hw6f-rjfj-j7j7
  - PYSEC-2026-1350
title: Eventlet affected by HTTP request smuggling in unparsed trailers
summary: Eventlet affected by HTTP request smuggling in unparsed trailers
severity: medium
vendor: eventlet
product: eventlet
ecosystem: pip
affected:
  - eventlet < 0.40.3
patched:
  - eventlet 0.40.3
published: '2025-08-29'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-hw6f-rjfj-j7j7'
references:
  - url: >-
      https://github.com/eventlet/eventlet/security/advisories/GHSA-hw6f-rjfj-j7j7
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-58068'
  - url: 'https://github.com/eventlet/eventlet/pull/1062'
  - url: >-
      https://github.com/eventlet/eventlet/commit/0bfebd1117d392559e25b4bfbfcc941754de88fb
  - url: 'https://github.com/eventlet/eventlet'
  - url: 'https://lists.debian.org/debian-lts-announce/2025/09/msg00003.html'
tags:
  - osv
  - pip
epss: 0.0039
epssPercentile: 0.3032
ingestedAt: '2026-07-08T18:25:50.326Z'
---

## Overview

### 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

## Affected packages

- `eventlet < 0.40.3`

## Remediation

Upgrade to a patched release:

- `eventlet 0.40.3`