What is CVE-2024-37891?

CVE-2024-37891 is a medium-severity vulnerability in Urllib3, classified under Incorrect Resource Transfer Between Spheres. CVSS score: 4.4/10. Published 2024-06-17.

How severe is CVE-2024-37891?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Is CVE-2024-37891 known to be exploited?

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

Vulnerability in Urllib3

CVE-2024-37891

urllib3 is a user-friendly HTTP client library for Python. When using urllib3's proxy support with `ProxyManager`, the `Proxy-Authorization` header is only sent to the configured proxy, as expected. However, when sending HTTP requests *wi…

EPSS: 0.002 (44.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N.

Affected products

Urllib3 — versions < 1.26.19, >= 2.0.0, < 2.2.2

Weakness classification (CWE)

CWE-669 — Incorrect Resource Transfer Between Spheres

Public proof-of-concept exploits

References

https://github.com/urllib3/urllib3/security/advisories/GHSA-34jh-p97f-mpxf (x_refsource_CONFIRM)
https://github.com/urllib3/urllib3/commit/accff72ecc2f6cf5a76d9570198a93ac7c90270e (x_refsource_MISC)

Frequently asked questions

What is CVE-2024-37891?: CVE-2024-37891 is a medium-severity vulnerability in Urllib3, classified under Incorrect Resource Transfer Between Spheres. CVSS score: 4.4/10. Published 2024-06-17.
How severe is CVE-2024-37891?: Medium severity. CVSS v3 base score is 4.4 out of 10.
Is CVE-2024-37891 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.