CVE-2026-26030

Semantic Kernel, Microsoft's semantic kernel Python SDK, has a remote code execution vulnerability in versions prior to 1.39.4, specifically within the `InMemoryVectorStore` filter functionality. The problem has been fixed in version `python-1.39.4`. Users should upgrade this version or higher. As a workaround, avoid using `InMemoryVectorStore` for production scenarios.

CVSS v3 9.9 CRITICAL

9.9^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/microsoft/semantic-kernel/pull/13505	Issue Tracking Patch
https://github.com/microsoft/semantic-kernel/releases/tag/python-1.39.4	Release Notes
https://github.com/microsoft/semantic-kernel/security/advisories/GHSA-xjw9-4gw8-4rqx	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:microsoft:semantic_kernel:*:*:*:*:*:python:*:*

History

No history.

Information

Published : 2026-02-19 17:24

Updated : 2026-06-17 10:25

NVD link : CVE-2026-26030

Mitre link : CVE-2026-26030

CVE.ORG link : CVE-2026-26030

JSON object : View

Products Affected

microsoft

semantic_kernel

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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