CVE-2025-50181

MEDIUM5.3

urllib3 redirects are not disabled when retries are disabled on PoolManager instantiation

Published Jun 19, 2025

Modified 2 months ago

Details

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.

References

WEB

https://github.com/urllib3/urllib3/commit/f05b1329126d5be6de501f9d1e3e36738bc08857

WEB

https://github.com/urllib3/urllib3/releases/tag/2.5.0

WEB

https://github.com/urllib3/urllib3/security/advisories/GHSA-pq67-6m6q-mj2v

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2025-50181

CVSS Analysis

CVSS v3.1

5.3