CVE-2025-50182
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2025-50182
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2025-50182.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 2.3.0-3 |
| debian | sid | fixed | 2.3.0-3 |
| debian | trixie | fixed | 2.3.0-3 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | urllib3 | >=2.2.0,<2.5.0 | 2.5.0 |
References
- https://github.com/urllib3/urllib3/security/advisories/GHSA-48p4-8xcf-vxj5
- https://nvd.nist.gov/vuln/detail/CVE-2025-50182
- https://github.com/urllib3/urllib3/commit/7eb4a2aafe49a279c29b6d1f0ed0f42e9736194f
- https://github.com/urllib3/urllib3
- https://github.com/urllib3/urllib3/releases/tag/2.5.0
- https://www.suse.com/security/cve/CVE-2025-50182.html
- https://security-tracker.debian.org/tracker/CVE-2025-50182
Verify integrity in audit chain (admin only). AS-IS.