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CVE-2025-50182

CVE-2025-50182 · urllib3 does not control redirects in browsers and Node.js

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 Fetch API or falling back on XMLHttpRequest. This means Python libraries can be used to make HTTP requests from a browser or Node.js. Additionally, urllib3 provides a mechanism to control redirects, but the retries and redirect parameters are ignored with Pyodide; the runtime itself determines redirect behavior. This issue has been patched in version 2.5.0.

CVSS 5.3 · Medium · EPSS 0.4% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • urllib3

    Versions
    • >= 2.2.0, < 2.5.0: Affected

    No fix published

  • python-urllib3 Debian:13

    Affected ranges
    • ECOSYSTEM: < 2.3.0-3

    Update to 2.3.0-3

  • python-urllib3 Debian:14

    Affected ranges
    • ECOSYSTEM: < 2.3.0-3

    Update to 2.3.0-3

  • urllib3 PyPI

    Versions
    • 2.2.0
    • 2.2.1
    • 2.2.2
    • 2.2.3
    • 2.3.0
    • 2.4.0
    Affected ranges
    • ECOSYSTEM: ≥ 2.2.0, < 2.5.0

    Update to 2.5.0

Original sources

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