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Fixed

LIN1021-19843 : Security Advisory - python-urllib3 - CVE-2025-66418

Created: Dec 8, 2025 Updated: Jun 8, 2026

Resolved Date: Jun 8, 2026

Found In Version: 10.21.20.1

Fix Version: 10.21.20.27

Severity: Standard

Applicable for: Wind River Linux LTS 21

Component/s: Userspace

Description

urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.24 and prior to 2.6.0, the number of links in the decompression chain was unbounded allowing a malicious server to insert a virtually unlimited number of compression steps leading to high CPU usage and massive memory allocation for the decompressed data. This vulnerability is fixed in 2.6.0.

CVEs

CVE-2025-66418