Description
Deserialization of untrusted data in Azure Core shared client library for Python allows an authorized attacker to execute code over a network.
Published: 2026-01-13
Score: 7.5 High
EPSS: 2.7% Low
KEV: No
Impact: Remote Code Execution
Action: Immediate Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-jm66-cg57-jjv5 Azure Core is vulnerable to deserialization of untrusted data
History

Thu, 05 Feb 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft azure Core Shared Client Library
CPEs cpe:2.3:a:microsoft:azure_sdk_for_python:*:*:*:*:*:*:*:* cpe:2.3:a:microsoft:azure_core_shared_client_library:*:*:*:*:*:python:*:*
Vendors & Products Microsoft azure Sdk For Python
Microsoft azure Core Shared Client Library

Tue, 20 Jan 2026 18:30:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft azure Sdk For Python
CPEs cpe:2.3:a:microsoft:azure_sdk_for_python:*:*:*:*:*:*:*:*
Vendors & Products Microsoft azure Sdk For Python

Tue, 13 Jan 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 13 Jan 2026 18:30:00 +0000

Type Values Removed Values Added
Description Deserialization of untrusted data in Azure Core shared client library for Python allows an authorized attacker to execute code over a network.
Title Azure Core shared client library for Python Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft azure Core Shared Client Library For Python
Weaknesses CWE-502
CPEs cpe:2.3:a:microsoft:azure_core_shared_client_library_for_python:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft azure Core Shared Client Library For Python
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


Subscriptions

Microsoft Azure Core Shared Client Library Azure Core Shared Client Library For Python
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-04-01T13:49:21.414Z

Reserved: 2025-12-11T21:02:05.732Z

Link: CVE-2026-21226

cve-icon Vulnrichment

Updated: 2026-01-13T18:28:29.233Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-13T19:16:23.987

Modified: 2026-02-05T17:58:29.607

Link: CVE-2026-21226

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-16T18:15:43Z

Weaknesses