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CVE-2025-58068

CVE-2025-58068 · Eventlet affected by HTTP request smuggling in unparsed trailers

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 6.3 · Medium · EPSS 0.4% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • eventlet

    Versions
    • < 0.40.3: Affected

    No fix published

  • python-eventlet Debian:12

    Versions
    • 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
    • 0.36.1-10
    • 0.36.1-11
    • 0.36.1-12
    • 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
    • 0.39.1-1
    • 0.39.1-2
    • 0.40.1-1
    • 0.40.1-2
    • 0.40.1-3
    • 0.40.2-1
    • 0.40.3-1
    • 0.40.3-2
    • 0.40.4-1
    • 0.40.4-2
    • 0.40.4-3
    • 0.40.4-4
    • 0.41.2-1
    • 0.41.2-2
    • 0.41.2-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • python-eventlet Debian:13

    Versions
    • 0.39.1-2
    Affected ranges
    • ECOSYSTEM: < 0.39.1-2+deb13u1

    Update to 0.39.1-2+deb13u1

  • python-eventlet Debian:14

    Versions
    • 0.39.1-2
    • 0.40.1-1
    • 0.40.1-2
    Affected ranges
    • ECOSYSTEM: < 0.40.1-3

    Update to 0.40.1-3

  • eventlet PyPI

    Versions
    • 0.10.0
    • 0.11.0
    • 0.12.1
    • 0.13.0
    • 0.14.0
    • 0.15.2
    • 0.16.1
    • 0.17.4
    • 0.18.2
    • 0.18.3
    • 0.18.4
    • 0.19.0
    • 0.2
    • 0.20.0
    • 0.20.1
    • 0.21.0
    • 0.22.0
    • 0.22.1
    • 0.23.0
    • 0.24.0
    • 0.24.1
    • 0.25.0
    • 0.25.1
    • 0.25.2
    • 0.26.0
    • 0.26.1
    • 0.27.0
    • 0.28.0
    • 0.28.1
    • 0.29.0
    • 0.29.1
    • 0.30.0
    • 0.30.1
    • 0.30.2
    • 0.30.3
    • 0.31.0
    • 0.31.1
    • 0.32.0
    • 0.33.0
    • 0.33.1
    • 0.33.2
    • 0.33.3
    • 0.34.1
    • 0.34.2
    • 0.34.3
    • 0.35.0
    • 0.35.1
    • 0.35.2
    • 0.36.0
    • 0.36.1
    • 0.37.0
    • 0.38.0
    • 0.38.1
    • 0.38.2
    • 0.39.0
    • 0.39.1
    • 0.40.0
    • 0.40.1
    • 0.40.2
    • 0.5.3
    • 0.6.1
    • 0.7
    • 0.8
    • 0.8.16
    • 0.9.17
    Affected ranges
    • ECOSYSTEM: < 0.40.3

    Update to 0.40.3

  • python-eventlet Ubuntu:16.04:LTS

    Versions
    • 0.17.4-2ubuntu1
    • 0.18.4-1ubuntu1
    • 0.18.4-1ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • python-eventlet Ubuntu:18.04:LTS

    Versions
    • 0.19.0-7
    • 0.20.0-2~build1
    • 0.20.0-2ubuntu1
    • 0.20.0-2ubuntu2
    • 0.20.0-3
    • 0.20.0-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • python-eventlet Ubuntu:Pro:20.04:LTS

    Versions
    • 0.25.0-0ubuntu1
    • 0.25.1-2build1
    • 0.25.1-2ubuntu1
    • 0.25.1-2ubuntu1.1
    Affected ranges
    • ECOSYSTEM: < 0.25.1-2ubuntu1.1+esm2

    Update to 0.25.1-2ubuntu1.1+esm2

  • python-eventlet Ubuntu:22.04:LTS

    Versions
    • 0.30.2-0ubuntu1
    • 0.30.2-0ubuntu2
    • 0.30.2-5ubuntu2
    Affected ranges
    • ECOSYSTEM: < 0.30.2-5ubuntu2.2

    Update to 0.30.2-5ubuntu2.2

  • python-eventlet Ubuntu:24.04:LTS

    Versions
    • 0.33.1-4ubuntu1
    • 0.33.1-4ubuntu2
    • 0.35.1-0ubuntu1
    • 0.35.1-0ubuntu2
    • 0.35.2-0ubuntu1
    Affected ranges
    • ECOSYSTEM: < 0.35.2-0ubuntu1.1

    Update to 0.35.2-0ubuntu1.1

  • python-eventlet Ubuntu:25.10

    Versions
    • 0.39.0-0ubuntu1
    Affected ranges
    • ECOSYSTEM: < 0.39.0-0ubuntu2

    Update to 0.39.0-0ubuntu2

  • python-eventlet Ubuntu:26.04:LTS

    Affected ranges
    • ECOSYSTEM: < 0.39.0-0ubuntu2

    Update to 0.39.0-0ubuntu2

Original sources

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