HTTP Request Smuggling Affecting gevent package, versions [,25.4.1)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of Concept

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  • Snyk IDSNYK-PYTHON-GEVENT-9919772
  • published2 May 2025
  • disclosed1 May 2025
  • creditm4yfly

Introduced: 1 May 2025

New CVE NOT AVAILABLE CWE-444  (opens in a new tab)

How to fix?

Upgrade gevent to version 25.4.1 or higher.

Overview

Affected versions of this package are vulnerable to HTTP Request Smuggling due to improper handling of pywsgi Input._send_100_continue. An attacker could extract data or compromise data integrity by sending a request with an Expect: 100-continue header.

CVSS Base Scores

version 4.0
version 3.1