Critical Security Update for python-gevent: Addressing CVE-2023-41419

python-gevent Updated 25 Nov 2025

Summary

24/11/2025
N/A
Yes i
Unrated
Not published

DLA-4377-1: python-gevent - security update. Affects python-gevent versions < 20.9.0-2+deb11u1. Fixed in 20.9.0-2+deb11u1. How to fix ↓

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Background

python-gevent is a coroutine-based networking library for Python that provides a high-level interface for asynchronous programming. It is widely used for building concurrent applications, leveraging greenlets to enable lightweight, cooperative multitasking. This library is essential for developers looking to implement scalable network applications. However, it has recently been identified as vulnerable to a security issue that could potentially compromise the integrity of applications utilizing it.

Vulnerability Detail

The vulnerability identified as CVE-2023-41419 affects python-gevent and stems from improper handling of certain inputs, which could allow an attacker to exploit the library. This could lead to unauthorized access or manipulation of data within applications that rely on python-gevent for their networking capabilities. The ramifications of this vulnerability could be severe, potentially allowing attackers to execute arbitrary code or disrupt service availability.

How To Fix

Minimum fixed version

20.9.0-2+deb11u1

This is the first release that contains the fix.

sudo apt-get install --only-upgrade python-gevent

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Workaround

As a temporary workaround, users can limit the exposure of their applications by implementing stricter input validation and sanitization processes. This can help mitigate the risk of exploitation until the package is updated.

Conclusion

In summary, the python-gevent library has a critical vulnerability (CVE-2023-41419) that needs immediate attention. Users are advised to update to the patched version to secure their applications. Additionally, utilizing tools like Vulert can help monitor for vulnerabilities in real-time.

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FAQ

CVE-2023-41419 is a security vulnerability in the python-gevent library that could allow attackers to exploit applications using it.

You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.

Failing to update python-gevent could expose your application to potential attacks, leading to unauthorized access, data manipulation, or service disruption.

Yes, Vulert provides a solution that monitors and alerts in real-time for open-source vulnerabilities in your software using just a manifest file like package-lock.json.

If immediate updates are not possible, implement stricter input validation and sanitization as a temporary measure to reduce the risk of exploitation.

Related vulnerabilities

Recent vulnerabilities recorded for python-gevent.

How To Fix

Minimum fixed version

20.9.0-2+deb11u1

This is the first release that contains the fix.

sudo apt-get install --only-upgrade python-gevent

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

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