# CVE-2025-58068: python3-eventlet: Eventlet is a concurrent networking library for Python

CVE-2025-58068 is fixed in 2 products on 1 platform, first by python3-eventlet 0.25.1-2ubuntu1.1+esm2, released August 29, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-58068
- Priority: High
- CVSS: 9.1 (Medium)
- EPSS: 0.0042
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 29, 2025

## Description

Eventlet is a concurrent networking library for Python. Prior to version0.40.3, the Eventlet WSGI parser is vulnerable to HTTP Request Smugglingdue to improper handling of HTTP trailer sections. This vulnerability couldenable attackers to, bypass front-end security controls, launch targetedattacks against active site users, and poison web caches. This problem hasbeen patched in Eventlet 0.40.3 by dropping trailers which is a breakingchange if a backend behind eventlet.wsgi proxy requires trailers. Aworkaround involves not using eventlet.wsgi facing untrusted clients.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-eventlet Debian 11.6 (bullseye) | 0.26.1-7+deb11u2 | [DLA-4289-1](https://patchblox.com/security/data/fix/linux/dla-4289-1.md) | Sep 2, 2025 |
| Linux | python-eventlet Debian 13.5 (trixie) | 0.39.1-2+deb13u1 | [DEBIAN-CVE-2025-58068](https://patchblox.com/security/data/fix/linux/debian-cve-2025-58068.md) | Aug 29, 2025 |
| Linux | python-eventlet Debian 14 | 0.40.1-3 | [DEBIAN-CVE-2025-58068](https://patchblox.com/security/data/fix/linux/debian-cve-2025-58068.md) | Aug 29, 2025 |
| Linux | python-eventlet opensuse-leap 15.6 | 0.33.3-150400.5.6.1 | [SUSE-SU-2025:03202-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03202-1.md) | Sep 12, 2025 |
| Linux | python-eventlet sles 15.6 | 0.33.3-150400.5.6.1 | [SUSE-SU-2025:03202-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03202-1.md) | Sep 12, 2025 |
| Linux | python-eventlet sles 15.7 | 0.33.3-150400.5.6.1 | [SUSE-SU-2025:03202-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03202-1.md) | Sep 12, 2025 |
| Linux | python3-eventlet Ubuntu 20.04 LTS (focal) | 0.25.1-2ubuntu1.1+esm2 | [python3-eventlet 0.25.1-2ubuntu1.1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-eventlet-0.25.1-2ubuntu1.1-esm2.md) | Aug 29, 2025 |
| Linux | python3-eventlet Ubuntu 22.04.1 LTS (jammy) | 0.30.2-5ubuntu2.2 | [python3-eventlet 0.30.2-5ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-python3-eventlet-0.30.2-5ubuntu2.2.md) | Aug 29, 2025 |
| Linux | python3-eventlet Ubuntu 24.04.5 LTS (noble) | 0.35.2-0ubuntu1.1 | [python3-eventlet 0.35.2-0ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-python3-eventlet-0.35.2-0ubuntu1.1.md) | Aug 29, 2025 |
| Linux | python3-eventlet Ubuntu 25.04 (plucky) | 0.39.0-0ubuntu1.1 | [python3-eventlet 0.39.0-0ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-python3-eventlet-0.39.0-0ubuntu1.1.md) | Jan 16, 2026 |
| Linux | python3-eventlet Ubuntu 25.10 (questing) | 0.39.0-0ubuntu2 | [python3-eventlet 0.39.0-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-python3-eventlet-0.39.0-0ubuntu2.md) | Aug 29, 2025 |
| Linux | python3-eventlet Ubuntu 26.04.1 LTS (resolute) | 0.39.0-0ubuntu2 | [python3-eventlet 0.39.0-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-python3-eventlet-0.39.0-0ubuntu2.md) | Aug 29, 2025 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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