CVE-2025-58068

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.

References

Affected packages

Debian:11 / python-eventlet

Package

Name: python-eventlet
Purl: pkg:deb/debian/python-eventlet?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.26.1-7+deb11u2

Affected versions

0.*

0.26.1-7

0.26.1-7+deb11u1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / python-eventlet

Package

Name: python-eventlet
Purl: pkg:deb/debian/python-eventlet?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.33.1-4

0.33.3-1

0.33.3-2

0.33.3-2.1

0.33.3-3

0.35.1-1

0.35.1-2

0.35.1-3

0.36.1-1

0.36.1-2

0.36.1-3

0.36.1-4

0.36.1-5

0.36.1-6

0.36.1-7

0.36.1-8

0.36.1-9

0.36.1-10

0.36.1-11

0.36.1-12

0.39.1-1

0.39.1-2

0.40.1-1

0.40.1-2

0.40.1-3

0.40.2-1

0.40.3-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / python-eventlet

Package

Name: python-eventlet
Purl: pkg:deb/debian/python-eventlet?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.39.1-2

0.40.1-1

0.40.1-2

0.40.1-3

0.40.2-1

0.40.3-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:14 / python-eventlet

Package

Name: python-eventlet
Purl: pkg:deb/debian/python-eventlet?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.40.1-3

Affected versions

0.*

0.39.1-2

0.40.1-1

0.40.1-2

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Git / github.com/eventlet/eventlet

Affected ranges

Type: GIT
Repo: https://github.com/eventlet/eventlet
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

0bfebd1117d392559e25b4bfbfcc941754de88fb

Affected versions

0.*

0.36.0

0.36.1

0.37.0

0.38.0

0.38.1

0.38.2

0.39.1

0.40.0

0.40.1

0.40.2

v0.*

v0.10

v0.11

v0.12

v0.13

v0.14

v0.15

v0.15.1

v0.15.2

v0.16

v0.16.1

v0.17

v0.17.1

v0.17.2

v0.17.3

v0.17.4

v0.18.0

v0.18.1

v0.18.2

v0.18.4

v0.19.0

v0.20.0

v0.20.1

v0.21.0

v0.22.0

v0.22.1

v0.23.0

v0.24.0

v0.24.1

v0.25.0

v0.25.1

v0.25.2

v0.26.0

v0.26.1

v0.27.0

v0.28.0

v0.28.1

v0.29.0

v0.29.1

v0.30.0

v0.30.1

v0.30.2

v0.30.3

v0.31.0

v0.31.1

v0.32.0

v0.33.0

v0.33.1

v0.33.2

v0.33.3

v0.34.0

v0.34.1

v0.34.2

v0.34.3

v0.35.0

v0.35.1

v0.35.2

v0.9.16

v0.9.17