PT-2026-6441 · Pypi · Azure Core

Published 2026-01-13 · Updated 2026-01-13

OSV

CVSS v3.1

7.5

High

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Fix

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

GHSA-JM66-CG57-JJV5

Affected Products

Azure Core

References · 5

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21226 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21226 · Security Note
• https://osv.dev/vulnerability/GHSA-jm66-cg57-jjv5 · Vendor Advisory
• https://github.com/Azure/azure-sdk-for-python/blob/6d2e6431ea0991861640e449e51e894247a7771a/sdk/core/azure-core/CHANGELOG.md#1380-2026-01-12 · Note
• https://github.com/Azure/azure-sdk-for-python · Note