CVE-2026-26030
Remote Code Execution in Semantic Kernel InMemoryVectorStore
Publication date: 2026-02-19
Last updated on: 2026-03-03
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | semantic_kernel | to 1.39.4 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-94 | The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in Microsoft's Semantic Kernel Python SDK, specifically in versions prior to 1.39.4. It is a remote code execution flaw found within the InMemoryVectorStore filter functionality. This means that an attacker could potentially execute arbitrary code remotely by exploiting this issue.
How can this vulnerability impact me? :
The vulnerability has a very high severity with a CVSS score of 9.9, indicating it can have a critical impact. Successful exploitation could allow an attacker to execute arbitrary code remotely, leading to full compromise of confidentiality, integrity, and availability of the affected system.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, upgrade the Semantic Kernel Python SDK to version 1.39.4 or higher.
As a workaround, avoid using the InMemoryVectorStore filter functionality in production scenarios.