CVE-2026-26030
Critical · 9.9CVSS
9.9
EPSS
4.1%
Published
Feb 19, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| PyPI | semantic-kernel | 0 | 1.39.4 |
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