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Security Advisories

CVE-2025-50182

NVD

https://nvd.nist.gov/vuln/detail/CVE-2025-50182

Severity

5.3

Medium

CVSS V3

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Summary

urllib3 does not control redirects in browsers and Node.js

Description

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.

References

Affected packages

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