CVE-2026-26030

CVE Enrichment

CVSS: 9.9 CRITICAL
EPSS: 4.13%
EPSS Percentile: 90.73%
CISA KEV: Not listed

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: security-advisories@github.com
Published: 20-Feb-2026 00:24
Last Modified: 17-Jun-2026 17:25
EPSS Date: 2026-10-20
CWE: CWE-94

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:L /
                            UI:N /
                            S:C /
                            C:H /
                            I:H /
                            A:H

Affected Products / Versions

microsoft / semantic_kernel
Version / affected range: * · before (exclusive) 1.39.4
cpe:2.3:a:microsoft:semantic_kernel:*:*:*:*:*:python:*:*

References

Last enrichment sync: 21-Oct-2026 18:46
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

regulatory-framework-ai AI agent frameworks” (CVE-2026-25592, CVE-2026-26030 in OrcaRouter’s 2026 AI Threat Report Examines Prompt Injection and Agent Security Gaps

CVE (2)

Malware (3)

Threat Actors (1)

MITRE ATT&CK (3)

Vendors (2)

Products (6)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.