CVE-2026-26030

CRITICAL
2026-02-19 [email protected] GHSA-xjw9-4gw8-4rqx
9.9
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 22:03 vuln.today
Patch Released
Mar 03, 2026 - 16:32 nvd
Patch available
CVE Published
Feb 19, 2026 - 17:24 nvd
CRITICAL 9.9

Tags

Microsoft Linux Python RCE AI / ML Semantic Kernel

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.

Analysis

Remote code execution in Microsoft Semantic Kernel Python SDK before 1.39.4. Code injection in the AI orchestration framework. …

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Remediation

Within 24 hours: Identify all systems and applications using Semantic Kernel Python SDK versions prior to 1.39.4 and isolate affected systems from production networks if possible. Within 7 days: Apply vendor patch to upgrade all instances to version 1.39.4 or later, beginning with critical production systems. …

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Priority Score

50
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +50
POC: 0

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CVE-2026-26030 vulnerability details – vuln.today
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