CVE-2026-26030

critical · 9.9

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.

9.9

CVSS

3.8%

EPSS (exploit prob.)

89th

EPSS percentile

2026-02-19

Published

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

Weaknesses

CWE-94

Affected products

Vendor	Product	Affected versions
microsoft	semantic_kernel	< 1.39.4

Check a specific version with /api/v1/cve/match.

References

https://github.com/microsoft/semantic-kernel/pull/13505
https://github.com/microsoft/semantic-kernel/releases/tag/python-1.39.4
https://github.com/microsoft/semantic-kernel/security/advisories/GHSA-xjw9-4gw8-4rqx

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-26030