GHSA-xjw9-4gw8-4rqxCriticalCVSS 9.9
Microsoft Semantic Kernel InMemoryVectorStore filter functionality vulnerable to remote code execution
🔗 CVE IDs covered (1)
📋 Description
Impact:
An RCE vulnerability has been identified in Microsoft Semantic Kernel Python SDK, specifically within the InMemoryVectorStore filter functionality.
Patches:
The problem has been fixed in python-1.39.4. Users should upgrade this version or higher.
Workarounds:
Avoid using InMemoryVectorStore for production scenarios.
References:
Release python-1.39.4 · microsoft/semantic-kernel · GitHub PR to block use of dangerous attribute names that must not be accessed in filter expressions
🎯 Affected products1
- pip/semantic-kernel:< 1.39.4
🔗 References (6)
- https://github.com/microsoft/semantic-kernel/security/advisories/GHSA-xjw9-4gw8-4rqx
- https://nvd.nist.gov/vuln/detail/CVE-2026-26030
- https://github.com/microsoft/semantic-kernel/pull/13505
- https://github.com/microsoft/semantic-kernel/releases/tag/python-1.39.4
- https://github.com/pypa/advisory-database/tree/main/vulns/semantic-kernel/PYSEC-2026-163.yaml
- https://github.com/advisories/GHSA-xjw9-4gw8-4rqx