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CVE-2026-26030

Microsoft Semantic Kernel InMemoryVectorStore filter functionality vulnerable to remote code execution

Published: Feb 19, 2026Updated: Mar 3, 2026 Sources: CVE List NVD GHSACWE-94
9.9CRITICAL
NVD MITRE
EPSS Score
3.7%
Top 11.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-94

Affected Products

microsoft
commercial·US
semantic-kernelLibraryLibrary
OSS Libraries / generic-library
semantic kernelLibrary
OSS Libraries / generic-library
PyPI
package-ecosystem
semantic-kernel
OSS Libraries

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/microsoft/semantic-kernel/security/advisories/GHSA-xjw9-4gw8-4rqx
github.com
https://github.com/microsoft/semantic-kernel/pull/13505
github.com
https://github.com/microsoft/semantic-kernel/releases/tag/python-1.39.4
github.com
and 3 more references View all →
News mentions
3

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