CVE-2025-50181 MEDIUM

CVE-2025-50181: urllib3 redirects are not disabled when retries are disabled on PoolManager instantiation

Vendor Urllib3
Product urllib3
Weakness CWE-601 · Open redirect
Published June 19, 2025
Last update December 22, 2025
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

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 instantiating a PoolManager and specifying retries in a way that disable redirects. By default, requests and botocore users are not affected. An application attempting to mitigate SSRF or open redirect vulnerabilities by disabling redirects at the PoolManager level will remain vulnerable. This issue has been patched in version 2.5.0.

Key dates

02Disclosure timeline

June 19, 2025 CVE published
December 22, 2025 Record updated