{"action":"Upgrade semantic-kernel to 1.39.4 or later.","affected":[{"fixed":"1.39.4","introduced":"0"}],"component":"semantic-kernel","cve_ids":["CVE-2026-26030"],"ecosystem":"PyPI","epss":0.03914,"exploited":false,"fixed_versions":["1.39.4"],"ghsa_id":"GHSA-xjw9-4gw8-4rqx","id":"tcs_01M5KGTR3RHGQXN54GBFF44TPH","modified_at":"2026-05-24T16:45:05.183432288Z","published_at":"2026-02-19T17:24:50.487Z","references":["https://osv.dev/vulnerability/PYSEC-2026-163","https://github.com/microsoft/semantic-kernel/releases/tag/python-1.39.4","https://github.com/microsoft/semantic-kernel/pull/13505","https://github.com/microsoft/semantic-kernel/security/advisories/GHSA-xjw9-4gw8-4rqx"],"severity":{"label":"critical","score":9.9},"sources":[{"source":"osv","source_id":"PYSEC-2026-163","url":"https://osv.dev/vulnerability/PYSEC-2026-163"}],"summary":"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"}