CVE-2026-26030

9.9 CRITICAL
Published: February 19, 2026 Modified: March 03, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.9 / 10.0
EPSS (Exploit Probability)
0.1%
30th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

microsoft