CVE-2026-59860

{
  "id": "CVE-2026-59860",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-16T15:16:35.310",
  "lastModified": "2026-10-24T21:10:00.130",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.3, Kiota is affected by a code-generation injection vulnerability in the C# XML documentation-comment sink (the description, externalDocs label, and externalDocs link fields emitted as /// … comments). When text from an OpenAPI description is written into single-line XML doc comments without stripping newline and Unicode line-terminator characters, an attacker can break out of the /// comment line and inject additional code into generated C# clients. This issue is fixed in version 1.29.1 and 1.32.3."
    },
    {
      "lang": "es",
      "value": "Kiota es un generador de código de cliente HTTP basado en OpenAPI. Antes de la versión 1.32.3, Kiota está afectado por una vulnerabilidad de inyección en la generación de código en el sink de comentarios de documentación XML de C# (los campos de descripción, etiqueta externalDocs y enlace externalDocs emitidos como comentarios /// ...). Cuando el texto de una descripción de OpenAPI se escribe en comentarios de documentación XML de una sola línea sin eliminar los caracteres de nueva línea y los caracteres terminadores de línea Unicode, un atacante puede salir de la línea de comentario /// e inyectar código adicional en los clientes C# generados. Este problema está solucionado en la versión 1.32.3."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "microsoft",
          "product": "kiota",
          "versions": [
            {
              "version": ">= 1.30.0, < 1.31.1",
              "status": "affected"
            },
            {
              "version": "< 1.29.1",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "userInteraction": "PASSIVE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-17T03:56:34.813340Z",
          "id": "CVE-2026-59860",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/microsoft/kiota/commit/ebb632db90aa8e3c20949337d9faa2720d64ca44",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/microsoft/kiota/pull/7831",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/microsoft/kiota/releases/tag/v1.32.3",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/microsoft/kiota/security/advisories/GHSA-3hrf-2gc2-mx32",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/microsoft/kiota/security/advisories/GHSA-3hrf-2gc2-mx32",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}