Paper/Archive/CVE-2026-26030

CVE-2026-26030

microsoft semantic-kernel — Microsoft Semantic Kernel InMemoryVectorStore filter functionality vulnerable to remote code execution

EPSS 4%CVSS 10.0

critical.is priorityof 100

CVSS 10.0 (CNA)10.0 / 10 × 3030.0 Not in CISA KEV+300.0 EPSS percentile 90.3.903 × 2018.1 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE 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

ProductAffectedFixed inSource

semantic-kernel< 1.39.4–CNA

Scores by source

GitHub_M (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

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