Microsoft Semantic Kernel InMemoryVectorStore filter functionality vulnerable to remote code execution
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 10epss 3.7%
from disclosure to weapon123 days
Published on NVDFeb 19
1st PoC+123d
exploitation probability
3.7%top 11% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products
microsoft · semantic-kernelpublic PoCs found — 1
githubgithub.com/InertFluid/sk-cve-2026-26030-lab★ 1⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.