CVE-2025-50181: urllib3 Open Redirect

Description

urllib3 is a user-friendly HTTP client library for Python. Prior to 2.5.0, it is possible to disable redirects for all requests by instantiating a PoolManager and specifying retries in a way that disable redirects. By default, requests and botocore users are not affected. An application attempting to mitigate SSRF or open redirect vulnerabilities by disabling redirects at the PoolManager level will remain vulnerable. This issue has been patched in version 2.5.0.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-601 CWE-601

Affected Products

Vendor	Product	Versions
python	urllib3	< 2.5.0

References

Advisories & Patches

https://github.com/urllib3/urllib3/commit/f05b1329126d5be6de501f9d1e3e36738bc08857 https://github.com/urllib3/urllib3/security/advisories/GHSA-pq67-6m6q-mj2v

Exploits

https://github.com/urllib3/urllib3/security/advisories/GHSA-pq67-6m6q-mj2v

Other References

https://github.com/urllib3/urllib3/releases/tag/2.5.0

Frequently Asked Questions

What is CVE-2025-50181? +

urllib3 is a user-friendly HTTP client library for Python. Prior to 2.5.0, it is possible to disable redirects for all requests by instantiating a PoolManager and specifying retries in a way that disable redirects. By default, requests and botocore users are not affected. An application attempting to mitigate SSRF or open redirect vulnerabilities by disabling redirects at the PoolManager level will remain vulnerable. This issue has been patched in version 2.5.0. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-50181? +

CVE-2025-50181 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-50181? +

CVE-2025-50181 affects products from python, specifically: urllib3. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-50181? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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