Is CVE-2026-44431 actively exploited?

No active exploitation of CVE-2026-44431 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44431 be exploited remotely?

Yes. CVE-2026-44431 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44431?

CVE-2026-44431 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2026-44431

CWE-200Published: May 13, 2026· Updated: May 14, 2026

5.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.9th

Official Description

urllib3 is an HTTP client library for Python. From 1.23 to before 2.7.0, cross-origin redirects followed from the low-level API via ProxyManager.connection_from_url().urlopen(..., assert_same_host=False) still forward these sensitive headers. This vulnerability is fixed in 2.7.0.

NVD Source

Technical Analysis

CVE-2026-44431 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.