CVE-2025-66418: urllib3 allows an unbounded number of links in the decompression chain
Overview
- Severity
- N/A
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2025-Dec
- Released
- 2025-12-10
- Last Updated
- 2026-02-18
- EPSS Score
- 0.03% (percentile: 9.8%)
Affected Products (5)
Open Source Software
- cbl2 python-urllib3 1.26.19-2 on CBL Mariner 2.0
- cbl2 python-virtualenv 20.26.6-2 on CBL Mariner 2.0
Mariner
- azl3 tensorflow 2.16.1-9 on Azure Linux 3.0
- azl3 python-urllib3 2.0.7-2 on Azure Linux 3.0
Other
Revision History
- 2025-12-10: Information published.
- 2025-12-11: Information published.
- 2025-12-16: Information published.
- 2025-12-17: Information published.
- 2025-12-23: Information published.
- 2026-02-18: Information published.