CVE-2026-44432

>= 2.6.0 and < 2.7.0

urllib3 is an HTTP client library for Python. From 2.6.0 to before 2.7.0, urllib3 could decompress the whole response instead of t

7.5HIGH

CVE-2026-44431

>= 1.23 and < 2.7.0

urllib3 is an HTTP client library for Python. From 1.23 to before 2.7.0, cross-origin redirects followed from the low-level API vi

5.3MEDIUM

CVE-2026-21441

>= 1.22 and < 2.6.3

urllib3 is an HTTP client library for Python. urllib3's streaming API is designed for the efficient handling of large HTTP respons

7.5HIGH

CVE-2025-66471

>= 1.0 and < 2.6.0

urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.0 and prior to 2.6.0, the Streaming API improperl

7.5HIGH

CVE-2025-66418

>= 1.24 and < 2.6.0

urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.24 and prior to 2.6.0, the number of links in the

7.5HIGH

CVE-2025-50182

>= 2.2.0 and < 2.5.0

urllib3 is a user-friendly HTTP client library for Python. Starting in version 2.2.0 and prior to 2.5.0, urllib3 does not control

5.3MEDIUM

CVE-2025-50181

< 2.5.0

urllib3 is a user-friendly HTTP client library for Python. Prior to 2.5.0, it is possible to disable redirects for all requests by

5.3MEDIUM

CVE-2024-37891

< 1.26.19

urllib3 is a user-friendly HTTP client library for Python. When using urllib3's proxy support with ProxyManager, the `Proxy-Auth

4.4MEDIUM

CVE-2023-45803

< 1.26.18

urllib3 is a user-friendly HTTP client library for Python. urllib3 previously wouldn't remove the HTTP request body when an HTTP r

4.2MEDIUM

CVE-2018-25091

< 1.24.2

urllib3 before 1.24.2 does not remove the authorization HTTP header when following a cross-origin redirect (i.e., a redirect that

6.1MEDIUM

CVE-2023-43804

< 1.26.17

urllib3 is a user-friendly HTTP client library for Python. urllib3 doesn't treat the Cookie HTTP header special or provide any h

5.9MEDIUM

CVE-2021-33503

>= 1.25.4 and < 1.26.5

An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component

7.5HIGH

CVE-2021-28363

>= 1.26.0 and < 1.26.4

The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxie

6.5MEDIUM

CVE-2020-26137

< 1.25.9

urllib3 before 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and

6.5MEDIUM

CVE-2020-7212

>= 1.25.2 and <= 1.25.7

The _encode_invalid_chars function in util/url.py in the urllib3 library 1.25.2 through 1.25.7 for Python allows a denial of servi

7.5HIGH

CVE-2019-11324

< 1.24.2

The urllib3 library before 1.24.2 for Python mishandles certain cases where the desired set of CA certificates is different from t

7.5HIGH

CVE-2019-11236

<= 1.24.2

In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.

6.1MEDIUM

CVE-2018-20060

< 1.23

urllib3 before version 1.23 does not remove the Authorization HTTP header when following a cross-origin redirect (i.e., a redirect

9.8CRITICAL

CVE-2016-9015

all versions

Versions 1.17 and 1.18 of the Python urllib3 library suffer from a vulnerability that can cause them, in certain configurations, t

3.7LOW