{"id":"CVE-2026-26030","aliases":["GHSA-xjw9-4gw8-4rqx","PYSEC-2026-163"],"url":"https://o3.security/vulnerability/CVE-2026-26030","summary":"Microsoft Semantic Kernel InMemoryVectorStore filter functionality vulnerable to remote code execution","details":"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":"2026-02-19T16:00:55.623Z","modified":"2026-08-07T11:49:14.732920640Z","cvss":{"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"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"semantic-kernel","fixedVersion":"1.39.4"}],"fix":{"url":"https://github.com/microsoft/semantic-kernel/pull/13505","label":"microsoft/semantic-kernel#13505"},"references":[{"type":"WEB","url":"https://github.com/microsoft/semantic-kernel/releases/tag/python-1.39.4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26030.json"},{"type":"ADVISORY","url":"https://github.com/microsoft/semantic-kernel/security/advisories/GHSA-xjw9-4gw8-4rqx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26030"},{"type":"FIX","url":"https://github.com/microsoft/semantic-kernel/pull/13505"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:49:14.732920640Z"}}