Information Exposure Affecting python-urllib3 package, versions <2.6.3-1ubuntu1.1


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.33% (26th percentile)

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  • Snyk IDSNYK-UBUNTU2604-PYTHONURLLIB3-16781910
  • published4 Jun 2026
  • disclosed13 May 2026

Introduced: 13 May 2026

CVE-2026-44431  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Ubuntu:26.04 python-urllib3 to version 2.6.3-1ubuntu1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-urllib3 package and not the python-urllib3 package as distributed by Ubuntu. See How to fix? for Ubuntu:26.04 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1