HIGH 7.5 Microsoft
CVE-2026-21441
urllib3 vulnerable to decompression-bomb safeguard bypass when following HTTP redirects (streaming API)
Microsoft Security Update 2026-Jan: urllib3 vulnerable to decompression-bomb safeguard bypass when following HTTP redirects (streaming API)
Affected Products
- azl3 tensorflow 2.16.1-9 on Azure Linux 3.0
- azl3 python-urllib3 2.0.7-4 on Azure Linux 3.0
- azl3 tensorflow 2.16.1-10 on Azure Linux 3.0
- azl3 python-urllib3 2.0.7-3 on Azure Linux 3.0
- cbl2 python-urllib3 1.26.19-2 on CBL Mariner 2.0
- cbl2 python-virtualenv 20.26.6-2 on CBL Mariner 2.0
- cbl2 python-urllib3 1.26.19-3 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21441
- https://nvd.nist.gov/vuln/detail/CVE-2026-21441
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-01-13 via Microsoft. Affected: azl3 tensorflow 2.16.1-9 on Azure Linux 3.0, azl3 python-urllib3 2.0.7-4 on Azure Linux 3.0, azl3 tensorflow 2.16.1-10 on Azure Linux 3.0 and 4 more.
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