{"id":"CVE-2026-59861","state":"PUBLISHED","title":"Kiota: Code Generation Literal Injection in Kiota Ruby Generator","description":"Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.0, Kiota's Ruby generator embedded OpenAPI default fields, property names, and other schema-derived strings through CodeMethodWriter.cs and SanitizeForQuotedLiteral() in Writers/StringExtensions.cs into Ruby double-quoted literals without escaping #, allowing attacker-controlled #{expr}, #$var, or #@var interpolation markers to inject arbitrary Ruby code into generated model classes. This issue is fixed in version 1.29.1 and 1.32.0.","publishedAt":"2026-07-16T14:36:32.010Z","updatedAt":"2026-08-17T15:02:02.208Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["microsoft kiota"],"affected":[{"vendor":"microsoft","product":"kiota","versions":[{"version":">= 1.30.0, < 1.31.1","status":"affected"},{"version":"< 1.29.1","status":"affected"}]}],"references":["https://github.com/microsoft/kiota/security/advisories/GHSA-xg2h-5xr2-29jw","https://github.com/microsoft/kiota/pull/7746","https://github.com/microsoft/kiota/commit/fee1b648bb4394ba7ba72de9c0ce4f2a0bad0cb6","https://github.com/microsoft/kiota/releases/tag/v1.32.0"],"weaknesses":["CWE-94"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/59xxx/CVE-2026-59861.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59861","state":"PUBLISHED","datePublished":"2026-07-16T14:36:32.010Z","dateUpdated":"2026-08-17T15:02:02.208Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-07T15:41:53.606Z"},"containers":{"cna":{"title":"Kiota: Code Generation Literal Injection in Kiota Ruby Generator","descriptions":[{"lang":"en","value":"Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.0, Kiota's Ruby generator embedded OpenAPI default fields, property names, and other schema-derived strings through CodeMethodWriter.cs and SanitizeForQuotedLiteral() in Writers/StringExtensions.cs into Ruby double-quoted literals without escaping #, allowing attacker-controlled #{expr}, #$var, or #@var interpolation markers to inject arbitrary Ruby code into generated model classes. This issue is fixed in version 1.29.1 and 1.32.0."}],"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-xg2h-5xr2-29jw","name":"https://github.com/microsoft/kiota/security/advisories/GHSA-xg2h-5xr2-29jw","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/microsoft/kiota/pull/7746","name":"https://github.com/microsoft/kiota/pull/7746","tags":["x_refsource_MISC"]},{"url":"https://github.com/microsoft/kiota/commit/fee1b648bb4394ba7ba72de9c0ce4f2a0bad0cb6","name":"https://github.com/microsoft/kiota/commit/fee1b648bb4394ba7ba72de9c0ce4f2a0bad0cb6","tags":["x_refsource_MISC"]},{"url":"https://github.com/microsoft/kiota/releases/tag/v1.32.0","name":"https://github.com/microsoft/kiota/releases/tag/v1.32.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-94","lang":"en","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-17T15:02:02.208Z"},"source":{"advisory":"GHSA-xg2h-5xr2-29jw","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-59861","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-07-17T03:56:35.781411Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-29T19:26:44.162Z"}}]}}}