{"cve":"CVE-2025-50182","nvd":{"published":"2025-06-19T02:15:17.967","modified":"2026-06-17T09:34:48.950","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-601"],"references":["https://github.com/urllib3/urllib3/commit/7eb4a2aafe49a279c29b6d1f0ed0f42e9736194f","https://github.com/urllib3/urllib3/releases/tag/2.5.0","https://github.com/urllib3/urllib3/security/advisories/GHSA-48p4-8xcf-vxj5"],"products":["python:urllib3"],"source":"nvd","synced_at":"2026-10-19T22:03:23.287444849+00:00"},"epss":{"cve":"CVE-2025-50182","score":0.00602,"percentile":0.48798,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-48p4-8xcf-vxj5","url":"https://osv.dev/vulnerability/GHSA-48p4-8xcf-vxj5","summary":"urllib3 does not control redirects in browsers and Node.js","modified":"2026-09-10T03:50:24.821170285Z","packages":[{"ecosystem":"PyPI","name":"urllib3","purl":"pkg:pypi/urllib3","ranges":[">=2.2.0 <2.5.0"],"fixed":["2.5.0"]}]},{"id":"PYSEC-2026-1997","url":"https://osv.dev/vulnerability/PYSEC-2026-1997","summary":"urllib3 does not control redirects in browsers and Node.js","modified":"2026-07-07T17:48:15.745179657Z","packages":[{"ecosystem":"PyPI","name":"urllib3","purl":"pkg:pypi/urllib3","ranges":[">=2.2.0 <2.5.0"],"fixed":["2.5.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}