What is CVE-2025-50181?

CVE-2025-50181 is a medium-severity vulnerability in Urllib3, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 5.3/10. Published 2025-06-19.

How severe is CVE-2025-50181?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2025-50181 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Open Redirect in Urllib3

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…

Vulnerability class: Open Redirect

EPSS: 0.001 (23.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Urllib3 — versions < 2.5.0

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

Public proof-of-concept exploits

References

https://github.com/urllib3/urllib3/security/advisories/GHSA-pq67-6m6q-mj2v (x_refsource_CONFIRM)
https://github.com/urllib3/urllib3/commit/f05b1329126d5be6de501f9d1e3e36738bc08857 (x_refsource_MISC)
https://github.com/urllib3/urllib3/releases/tag/2.5.0 (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-50181?: CVE-2025-50181 is a medium-severity vulnerability in Urllib3, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 5.3/10. Published 2025-06-19.
How severe is CVE-2025-50181?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2025-50181 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.