CVE-2026-21226: Azure Core shared client library for Python Remote Code Execution Vulnerability
Azure Core shared client library for Python Remote Code Execution Vulnerability
Other sources
Deserialization of untrusted data in Azure Core shared client library for Python allows an authorized attacker to execute code over a network.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
pip/azure-coreto a version that resolves this vulnerability.Fixed in 1.38.0 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 1.38.0
Event History
Frequently Asked Questions
What is the severity of CVE-2026-21226?
CVE-2026-21226 is categorized with a high severity score due to its potential for remote code execution.
How do I fix CVE-2026-21226?
To mitigate CVE-2026-21226, update to the latest version of the Azure Core shared client library for Python as provided in the official patch.
What type of vulnerability is CVE-2026-21226?
CVE-2026-21226 is a remote code execution vulnerability caused by the deserialization of untrusted data.
Who is affected by CVE-2026-21226?
CVE-2026-21226 affects users of the Azure Core shared client library for Python who have not applied the necessary security updates.
Can CVE-2026-21226 be exploited remotely?
Yes, CVE-2026-21226 can be exploited remotely by an authorized attacker to execute arbitrary code.