{
 "id": "CVE-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.",
 "published": "2026-02-19",
 "last_modified": "2026-06-17",
 "vuln_status": "Analyzed",
 "cna": "security-advisories@github.com",
 "cvss": {
  "version": "3.1",
  "score": 9.9,
  "severity": "CRITICAL",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
  "source": "security-advisories@github.com"
 },
 "cwe": [
  "CWE-94"
 ],
 "products": [
  {
   "vendor": "microsoft",
   "product": "semantic_kernel",
   "versions_affected": "< 1.39.4",
   "fixed_in": "1.39.4",
   "product_id": "semantic-kernel"
  }
 ],
 "category": "framework",
 "surface": [
  "code_execution"
 ],
 "kev": null,
 "fix": {
  "status": "fixed",
  "version": "1.39.4",
  "url": "https://github.com/microsoft/semantic-kernel/pull/13505"
 },
 "references": [
  {
   "url": "https://github.com/microsoft/semantic-kernel/pull/13505",
   "source": "security-advisories@github.com",
   "tags": [
    "Issue Tracking",
    "Patch"
   ]
  },
  {
   "url": "https://github.com/microsoft/semantic-kernel/releases/tag/python-1.39.4",
   "source": "security-advisories@github.com",
   "tags": [
    "Release Notes"
   ]
  },
  {
   "url": "https://github.com/microsoft/semantic-kernel/security/advisories/GHSA-xjw9-4gw8-4rqx",
   "source": "security-advisories@github.com",
   "tags": [
    "Patch",
    "Vendor Advisory"
   ]
  }
 ],
 "related_agents": [
  "microsoft-microsoft-semantic-kernel"
 ],
 "related_incidents": [],
 "match": {
  "tests": [
   "A:cpe"
  ],
  "terms": [
   "semantic-kernel:microsoft:semantic_kernel"
  ]
 },
 "status": "candidate",
 "note": null,
 "reviewer": null,
 "checked_on": null,
 "retrieved_on": "2026-10-25"
}