CVE-2025-50181CWE-601

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

Medium · published June 19, 2025

CVSS v3.1
5.3
EPSS
0%
Percentile
40.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00474 · 40.0th percentile
Weakness
CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
Published
2025-06-19T01:08Z
EPSS history
Timeline
  • 19 JUN 01:08Z
    urllib3 redirects are not disabled when retries are disabled on PoolManager instantiation
    cvelistv5