{"id":"CVE-2026-59863","state":"PUBLISHED","title":"Kiota: Workspace-config poisoning: out-of-repo file write + generation-time SSRF","description":"Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.5, Kiota honored a poisoned .kiota/workspace.json workspace configuration without validating per-client or per-plugin outputPath values during kiota client generate and kiota plugin generate, allowing a malicious repository or pull request to use absolute paths, rooted POSIX / paths, UNC \\\\ or // paths, Windows drive X:\\ paths, or .. traversal segments to write generated client files outside the workspace root on a developer or CI host. This issue is fixed in version 1.29.1 and 1.32.5.","publishedAt":"2026-07-16T14:42:02.337Z","updatedAt":"2026-08-17T15:02:40.475Z","severity":{"score":7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["microsoft kiota"],"affected":[{"vendor":"microsoft","product":"kiota","versions":[{"version":">= 1.30.0, < 1.31.1","status":"affected"},{"version":"< 1.29.1","status":"affected"}]}],"references":["https://github.com/microsoft/kiota/security/advisories/GHSA-4rj6-vrwv-wr8m","https://github.com/microsoft/kiota/pull/7885","https://github.com/microsoft/kiota/commit/4049327872db7846ace35c9003774d3e3878e4e9","https://github.com/microsoft/kiota/releases/tag/v1.32.5"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/59xxx/CVE-2026-59863.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59863","state":"PUBLISHED","datePublished":"2026-07-16T14:42:02.337Z","dateUpdated":"2026-08-17T15:02:40.475Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-07T15:41:53.607Z"},"containers":{"cna":{"title":"Kiota: Workspace-config poisoning: out-of-repo file write + generation-time SSRF","descriptions":[{"lang":"en","value":"Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.5, Kiota honored a poisoned .kiota/workspace.json workspace configuration without validating per-client or per-plugin outputPath values during kiota client generate and kiota plugin generate, allowing a malicious repository or pull request to use absolute paths, rooted POSIX / paths, UNC \\\\ or // paths, Windows drive X:\\ paths, or .. traversal segments to write generated client files outside the workspace root on a developer or CI host. This issue is fixed in version 1.29.1 and 1.32.5."}],"affected":[{"vendor":"microsoft","product":"kiota","versions":[{"version":">= 1.30.0, < 1.31.1","status":"affected"},{"version":"< 1.29.1","status":"affected"}]}],"references":[{"url":"https://github.com/microsoft/kiota/security/advisories/GHSA-4rj6-vrwv-wr8m","name":"https://github.com/microsoft/kiota/security/advisories/GHSA-4rj6-vrwv-wr8m","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/microsoft/kiota/pull/7885","name":"https://github.com/microsoft/kiota/pull/7885","tags":["x_refsource_MISC"]},{"url":"https://github.com/microsoft/kiota/commit/4049327872db7846ace35c9003774d3e3878e4e9","name":"https://github.com/microsoft/kiota/commit/4049327872db7846ace35c9003774d3e3878e4e9","tags":["x_refsource_MISC"]},{"url":"https://github.com/microsoft/kiota/releases/tag/v1.32.5","name":"https://github.com/microsoft/kiota/releases/tag/v1.32.5","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-17T15:02:40.475Z"},"source":{"advisory":"GHSA-4rj6-vrwv-wr8m","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-16T15:22:52.387399Z","id":"CVE-2026-59863","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-16T15:33:19.970Z"}}]}}}