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.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-xjw9-4gw8-4rqx Microsoft Semantic Kernel InMemoryVectorStore filter functionality vulnerable to remote code execution
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 20 Feb 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft
Microsoft semantic-kernel
Vendors & Products Microsoft
Microsoft semantic-kernel

Fri, 20 Feb 2026 01:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Thu, 19 Feb 2026 16:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Microsoft Semantic Kernel InMemoryVectorStore filter functionality vulnerable to remote code execution
Weaknesses CWE-94
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-20T04:55:49.082Z

Reserved: 2026-02-09T21:36:29.555Z

Link: CVE-2026-26030

cve-icon Vulnrichment

Updated: 2026-02-19T20:57:43.989Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-19T17:24:50.487

Modified: 2026-02-20T13:49:47.623

Link: CVE-2026-26030

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-20T10:06:21Z

Weaknesses