CVE Explorer

CVE-2026-26030

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.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:dd56e1980b7dcde37c6f28fceb009c7d1849f403d24bbe4b99ff53f91ad168f2

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"semantic-kernel","vendor":"microsoft","versions":[{"status":"affected","version":"< 1.39.4"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:7c96517245f12016df1ac463118ff7271fb678ae4b414480148aad060215ae85 · sha256:924eed0b42b3a6a3… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:7c96517245f12016df1ac463118ff7271fb678ae4b414480148aad060215ae85 · sha256:924eed0b42b3a6a3… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:7c96517245f12016df1ac463118ff7271fb678ae4b414480148aad060215ae85 · sha256:924eed0b42b3a6a3… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/microsoft/semantic-kernel/pull/13505","tags":["x_refsource_MISC"],"url":"https://github.com/microsoft/semantic-kernel/pull/13505"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7c96517245f12016df1ac463118ff7271fb678ae4b414480148aad060215ae85 · sha256:924eed0b42b3a6a3… · /containers/cna/references/1

{"name":"https://github.com/microsoft/semantic-kernel/releases/tag/python-1.39.4","tags":["x_refsource_MISC"],"url":"https://github.com/microsoft/semantic-kernel/releases/tag/python-1.39.4"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7c96517245f12016df1ac463118ff7271fb678ae4b414480148aad060215ae85 · sha256:924eed0b42b3a6a3… · /containers/cna/references/2

{"name":"https://github.com/microsoft/semantic-kernel/security/advisories/GHSA-xjw9-4gw8-4rqx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/microsoft/semantic-kernel/security/advisories/GHSA-xjw9-4gw8-4rqx"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7c96517245f12016df1ac463118ff7271fb678ae4b414480148aad060215ae85 · sha256:924eed0b42b3a6a3… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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