CVE-2026-26030 (GCVE-0-2026-26030)
Vulnerability from cvelistv5 – Published: 2026-02-19 16:00 – Updated: 2026-02-19 16:00
VLAI?
Title
Microsoft Semantic Kernel InMemoryVectorStore filter functionality vulnerable to remote code execution
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 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.
Severity ?
10 (Critical)
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| microsoft | semantic-kernel |
Affected:
< 1.39.4
|
{
"containers": {
"cna": {
"affected": [
{
"product": "semantic-kernel",
"vendor": "microsoft",
"versions": [
{
"status": "affected",
"version": "\u003c 1.39.4"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Semantic Kernel, Microsoft\u0027s 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."
}
],
"metrics": [
{
"cvssV3_1": {
"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"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-94",
"description": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-19T16:00:55.623Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"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"
},
{
"name": "https://github.com/microsoft/semantic-kernel/pull/13505",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/microsoft/semantic-kernel/pull/13505"
},
{
"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"
}
],
"source": {
"advisory": "GHSA-xjw9-4gw8-4rqx",
"discovery": "UNKNOWN"
},
"title": "Microsoft Semantic Kernel InMemoryVectorStore filter functionality vulnerable to remote code execution"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-26030",
"datePublished": "2026-02-19T16:00:55.623Z",
"dateReserved": "2026-02-09T21:36:29.555Z",
"dateUpdated": "2026-02-19T16:00:55.623Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-26030\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-02-19T17:24:50.487\",\"lastModified\":\"2026-02-19T17:24:50.487\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Semantic Kernel, Microsoft\u0027s 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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H\",\"baseScore\":9.9,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.1,\"impactScore\":6.0}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-94\"}]}],\"references\":[{\"url\":\"https://github.com/microsoft/semantic-kernel/pull/13505\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/microsoft/semantic-kernel/releases/tag/python-1.39.4\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/microsoft/semantic-kernel/security/advisories/GHSA-xjw9-4gw8-4rqx\",\"source\":\"security-advisories@github.com\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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