CVE-2026-21226

HIGH

Azure Core < - Code Injection

Title source: llm

Description

Deserialization of untrusted data in Azure Core shared client library for Python allows an authorized attacker to execute code over a network.

References (1)

Scores

CVSS v3 7.5
EPSS 0.0147
EPSS Percentile 80.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

CWE
CWE-502
Status published

Affected Products (2)

microsoft/azure_core_shared_client_library < 1.38.0
pypi/azure-core < 1.38.0PyPI

Timeline

Published Jan 13, 2026
Tracked Since Feb 18, 2026