How severe is CVE-2025-50181?

CVE-2025-50181 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-50181 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-50181?

CVE-2025-50181 affects Python Urllib3. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-50181?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-50181 have an EU (EUVD) identifier?

Yes. CVE-2025-50181 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18908.

When was CVE-2025-50181 published?

CVE-2025-50181 was published on 2025-06-19 and last updated on 2026-06-17.

CVE-2025-50181

CVE-2025-50181 is a medium-severity vulnerability in Python Urllib3 with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-601.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18908
Weakness: CWE-601
Affected product: Python Urllib3
Published: 2025-06-19
Last modified: 2026-06-17

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.

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.
How severe is CVE-2025-50181?: CVE-2025-50181 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-50181 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-50181?: CVE-2025-50181 affects Python Urllib3. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-50181?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-50181 have an EU (EUVD) identifier?: Yes. CVE-2025-50181 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18908.
When was CVE-2025-50181 published?: CVE-2025-50181 was published on 2025-06-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:python:urllib3:*:*:*:*:*:*:*:*

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