CVE-2025-50181

Description

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.

CVSS Metrics

• v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
• v3.1•MEDIUM•Score: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Trends

Current EPSS score: 0.08%• Percentile: 23%

Techniques & Countermeasures

• CWE-601•URL Redirection to Untrusted Site ('Open Redirect')

  The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

Affected Systems

• PyPI•urllib3

  < 2.5.0

• python•urllib3

  < 2.5.0

• urllib3•urllib3

  < 2.5.0

References (5)

• https://github.com/urllib3/urllib3/security/advisories/GHSA-pq67-6m6q-mj2v
• https://github.com/urllib3/urllib3/commit/f05b1329126d5be6de501f9d1e3e36738bc08857
• https://github.com/urllib3/urllib3/releases/tag/2.5.0
• https://nvd.nist.gov/vuln/detail/CVE-2025-50181
• https://github.com/urllib3/urllib3