Open Redirect in Python Urllib3
CVE-2025-50182
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 redirects in browsers and Node.js. urllib3 supports being used in a Pyodide runtime utilizing the JavaScript…
Vulnerability class: Open Redirect
EPSS: 0.003 (24.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Python Urllib3
- Urllib3 — versions >= 2.2.0, < 2.5.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-50182?
- CVE-2025-50182 is a medium-severity vulnerability in Python Urllib3, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 5.3/10. Published 2025-06-19.
- How severe is CVE-2025-50182?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2025-50182 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.