CVE-2026-26030CRITICAL 9.9EPSS p84.9%

CVE-2026-26030CVE-2026-26030

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.

Scoring

CVSS 3.19.9 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS2.85% probability of exploitation · percentile 84.9% · 2026-06-18T12:00:27Z
Published2026-02-19
Last modified2026-03-03

Underlying weaknesses· 1

CWE-94

References

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

1

TypeTargetConfidenceTier
WeaknessImproper Control of Generation of Code ('Code Injection')cwe-940%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.