gunicorn 20.0.2 vulnerabilities

Known vulnerabilities in the gunicorn package. This does not include vulnerabilities belonging to this package’s dependencies.

Vulnerability	Vulnerable Version
H HTTP Request Smuggling gunicorn is a Python WSGI HTTP Server for UNIX Affected versions of this package are vulnerable to HTTP Request Smuggling due to improper validation of the `Transfer-Encoding` header. An attacker can manipulate session data, poison caches, or compromise data integrity by exploiting the fallback to `Content-Length` when `Transfer-Encoding` is not correctly handled. How to fix HTTP Request Smuggling? Upgrade `gunicorn` to version 23.0.0 or higher.	[,23.0.0)
L Improper Check for Unusual or Exceptional Conditions gunicorn is a Python WSGI HTTP Server for UNIX Affected versions of this package are vulnerable to Improper Check for Unusual or Exceptional Conditions due to the use of `time.time()` in worker timeout logic, which may be wrong. An attacker who can control the system time can force a worker to time out. How to fix Improper Check for Unusual or Exceptional Conditions? Upgrade `gunicorn` to version 21.2.0 or higher.	[,21.2.0)
H HTTP Request Smuggling gunicorn is a Python WSGI HTTP Server for UNIX Affected versions of this package are vulnerable to HTTP Request Smuggling due to the improper validation of `Transfer-Encoding` headers. An attacker can bypass security restrictions and access restricted endpoints by crafting requests with conflicting `Transfer-Encoding` headers. Notes: This is only exploitable if users have a network path which does not filter out invalid requests; Users are advised to block access to restricted endpoints via a firewall or other mechanism until a fix can be developed. This issue arises from the application's incorrectly processing of requests with multiple, conflicting `Transfer-Encoding` headers, treating them as chunked regardless of the final encoding specified. How to fix HTTP Request Smuggling? Upgrade `gunicorn` to version 22.0.0 or higher.	[,22.0.0)

Vulnerability

Vulnerable Version

HTTP Request Smuggling

gunicorn is a Python WSGI HTTP Server for UNIX

Affected versions of this package are vulnerable to HTTP Request Smuggling due to improper validation of the Transfer-Encoding header. An attacker can manipulate session data, poison caches, or compromise data integrity by exploiting the fallback to Content-Length when Transfer-Encoding is not correctly handled.

How to fix HTTP Request Smuggling?

Upgrade gunicorn to version 23.0.0 or higher.

[,23.0.0)

Improper Check for Unusual or Exceptional Conditions

gunicorn is a Python WSGI HTTP Server for UNIX

Affected versions of this package are vulnerable to Improper Check for Unusual or Exceptional Conditions due to the use of time.time() in worker timeout logic, which may be wrong. An attacker who can control the system time can force a worker to time out.

How to fix Improper Check for Unusual or Exceptional Conditions?

Upgrade gunicorn to version 21.2.0 or higher.

[,21.2.0)

HTTP Request Smuggling

gunicorn is a Python WSGI HTTP Server for UNIX

Affected versions of this package are vulnerable to HTTP Request Smuggling due to the improper validation of Transfer-Encoding headers. An attacker can bypass security restrictions and access restricted endpoints by crafting requests with conflicting Transfer-Encoding headers.

Notes:

This is only exploitable if users have a network path which does not filter out invalid requests;
Users are advised to block access to restricted endpoints via a firewall or other mechanism until a fix can be developed.
This issue arises from the application's incorrectly processing of requests with multiple, conflicting Transfer-Encoding headers, treating them as chunked regardless of the final encoding specified.

How to fix HTTP Request Smuggling?

Upgrade gunicorn to version 22.0.0 or higher.

[,22.0.0)

gunicorn@20.0.2 vulnerabilities

WSGI HTTP Server for UNIX

latest version

latest non vulnerable version

first published

latest version published

licenses detected

Direct Vulnerabilities

How to fix?