{"id":"CVE-2026-59859","state":"PUBLISHED","title":"Kiota: Code Generation Literal Injection in the PHP Generator","description":"Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.4, Kiota's PHP generator embedded OpenAPI description, default fields, property names, and other schema-derived strings into PHP double-quoted literals through SanitizeDoubleQuote() in Writers/StringExtensions.cs without escaping $, allowing attacker-controlled ${...}, $var, or {$obj->prop} interpolation constructs to inject arbitrary PHP code into generated model and request-builder classes. This issue is fixed in version 1.29.1 and 1.32.4.","publishedAt":"2026-07-16T14:40:27.319Z","updatedAt":"2026-08-17T15:02:29.204Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/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-jqwh-526h-c92j","https://github.com/microsoft/kiota/pull/7863","https://github.com/microsoft/kiota/commit/5e2a211ac4261988fbdc72c3b268596ea8837b87","https://github.com/microsoft/kiota/releases/tag/v1.32.4"],"weaknesses":["CWE-94"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/59xxx/CVE-2026-59859.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59859","state":"PUBLISHED","datePublished":"2026-07-16T14:40:27.319Z","dateUpdated":"2026-08-17T15:02:29.204Z","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 the PHP Generator","descriptions":[{"lang":"en","value":"Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.4, Kiota's PHP generator embedded OpenAPI description, default fields, property names, and other schema-derived strings into PHP double-quoted literals through SanitizeDoubleQuote() in Writers/StringExtensions.cs without escaping $, allowing attacker-controlled ${...}, $var, or {$obj->prop} interpolation constructs to inject arbitrary PHP code into generated model and request-builder classes. This issue is fixed in version 1.29.1 and 1.32.4."}],"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-jqwh-526h-c92j","name":"https://github.com/microsoft/kiota/security/advisories/GHSA-jqwh-526h-c92j","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/microsoft/kiota/pull/7863","name":"https://github.com/microsoft/kiota/pull/7863","tags":["x_refsource_MISC"]},{"url":"https://github.com/microsoft/kiota/commit/5e2a211ac4261988fbdc72c3b268596ea8837b87","name":"https://github.com/microsoft/kiota/commit/5e2a211ac4261988fbdc72c3b268596ea8837b87","tags":["x_refsource_MISC"]},{"url":"https://github.com/microsoft/kiota/releases/tag/v1.32.4","name":"https://github.com/microsoft/kiota/releases/tag/v1.32.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"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":"2026-08-17T15:02:29.204Z"},"source":{"advisory":"GHSA-jqwh-526h-c92j","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-17T03:56:37.664979Z","id":"CVE-2026-59859","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-29T18:29:05.321Z"}}]}}}