Security Advisory

CVE-2025-66418

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-12-05 16:02:15

Last updated 2025-12-05 18:15:28

Assigner GitHub_M

State PUBLISHED

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.

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