CVE-2026-44431 (Medium) detected in urllib3-2.6.3-py3-none-any.whl

[mend-bolt-for-github]

CVE-2026-44431 - Medium Severity Vulnerability

Vulnerable Library - urllib3-2.6.3-py3-none-any.whl

HTTP library with thread-safe connection pooling, file post, and more.

Library home page: https://files.pythonhosted.org/packages/39/08/aaaad47bc4e9dc8c725e68f9d04865dbcb2052843ff09c97b08904852d84/urllib3-2.6.3-py3-none-any.whl

Path to dependency file: /requirements.txt

Path to vulnerable library: /tmp/ws-ua_20260402140528_BYRDYW/python_TYRXAX/20260402140530/urllib3-2.6.3-py3-none-any.whl,/tmp/ws-ua_20260402140528_BYRDYW/python_TYRXAX/20260402140530/urllib3-2.6.3-py3-none-any.whl

Dependency Hierarchy:

• ❌ urllib3-2.6.3-py3-none-any.whl (Vulnerable Library)

Found in HEAD commit: 733821ba208032bbe0d8b2992a2e4aece4265119

Found in base branch: main

Vulnerability Details

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.

Publish Date: 2026-05-13

URL: CVE-2026-44431

CVSS 3 Score Details (5.9)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: None
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-qccp-gfcp-xxvc

Release Date: 2026-05-11

Fix Resolution: 2.7.0

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