{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-59866", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-07T15:41:53.607Z", "datePublished": "2026-07-16T14:46:50.738Z", "dateUpdated": "2026-07-17T03:56:39.953Z"}, "containers": {"cna": {"title": "Kiota: Arbitrary file write + code-injection via x-ms-kiota-info clientClassName and clientNamespaceName", "problemTypes": [{"descriptions": [{"cweId": "CWE-22", "lang": "en", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-94", "lang": "en", "description": "CWE-94: Improper Control of Generation of Code ('Code Injection')", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/microsoft/kiota/security/advisories/GHSA-4vv7-jj25-4gh6", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/microsoft/kiota/security/advisories/GHSA-4vv7-jj25-4gh6"}, {"name": "https://github.com/microsoft/kiota/pull/7884", "tags": ["x_refsource_MISC"], "url": "https://github.com/microsoft/kiota/pull/7884"}, {"name": "https://github.com/microsoft/kiota/commit/dc812dbbf88ef7edf53a890d36b2f9d1460e947d", "tags": ["x_refsource_MISC"], "url": "https://github.com/microsoft/kiota/commit/dc812dbbf88ef7edf53a890d36b2f9d1460e947d"}, {"name": "https://github.com/microsoft/kiota/releases/tag/v1.32.5", "tags": ["x_refsource_MISC"], "url": "https://github.com/microsoft/kiota/releases/tag/v1.32.5"}], "affected": [{"vendor": "microsoft", "product": "kiota", "versions": [{"version": "< 1.32.5", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-16T14:46:50.738Z"}, "descriptions": [{"lang": "en", "value": "Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.32.5, Kiota emitted x-ms-kiota-info clientClassName and clientNamespaceName values without identifier or path sanitization as both generated client class or namespace names and generated output path components when `kiota generate` ran without -c/--class-name, allowing an attacker-controlled or compromised OpenAPI description to write generated source outside the -o output directory and inject arbitrary text into generated class or namespace declarations. This issue is fixed in version 1.32.5 by GenerationConfiguration.SanitizeClientClassName and SanitizeClientNamespaceName."}], "source": {"advisory": "GHSA-4vv7-jj25-4gh6", "discovery": "UNKNOWN"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-16T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-59866"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-17T03:56:39.953Z"}}]}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.32.5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "kiota", "source": "cna", "vendor": "microsoft"}, "product": "kiota", "vendor": "microsoft"}], "created": "2026-07-16T16:30:02.120124+00:00", "updated": "2026-07-22T21:00:19.108086+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$kiota"]}