USN-7772-1: Eventlet vulnerability

Publication date

24 September 2025

Overview

Eventlet could be made to bypass front-end security controls if it received a specially crafted request.


Packages

Details

It was discovered that Eventlet incorrectly handled certain requests.
An attacker could possibly use this issue to bypass front-end security
controls, launch targeted attacks against active site users, and poison web
caches.

It was discovered that Eventlet incorrectly handled certain requests.
An attacker could possibly use this issue to bypass front-end security
controls, launch targeted attacks against active site users, and poison web
caches.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
25.04 plucky python3-eventlet –  0.39.0-0ubuntu1.1
24.04 LTS noble python3-eventlet –  0.35.2-0ubuntu1.1
22.04 LTS jammy python3-eventlet –  0.30.2-5ubuntu2.2
20.04 LTS focal python3-eventlet –  0.25.1-2ubuntu1.1+esm2  

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