CVE-2026-8859

{
  "id": "CVE-2026-8859",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-17T20:17:31.643",
  "lastModified": "2026-10-24T20:10:00.137",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow an attacker to write arbitrary files to unintended locations due to improper input validation in the APIRequest component. A path traversal vulnerability exists when the \"Save to File\" feature is enabled, where filenames extracted from HTTP response Content-Disposition headers are not sanitized before being joined to the temporary directory path. An attacker controlling an external HTTP server can supply crafted filename values containing path traversal sequences (e.g., ../), enabling arbitrary file writes to locations accessible by the Langflow process."
    },
    {
      "lang": "es",
      "value": "IBM Langflow OSS 1.0.0 hasta 1.10.0 Langflow podría permitir a un atacante escribir archivos arbitrarios en ubicaciones no deseadas debido a una validación de entrada incorrecta en el componente APIRequest. Existe una vulnerabilidad de salto de ruta cuando la característica ’Guardar en archivo’ está habilitada, donde los nombres de archivo extraídos de los encabezados Content-Disposition de la respuesta HTTP no se desinfectan antes de unirse a la ruta del directorio temporal. Un atacante que controla un servidor HTTP externo puede proporcionar valores de nombre de archivo manipulados que contienen secuencias de salto de ruta (por ejemplo, .. / ), lo que permite escrituras de archivos arbitrarias en ubicaciones accesibles por el proceso Langflow."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "IBM",
          "product": "Langflow OSS",
          "cpes": [
            "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:langflow_oss:1.10.0:*:*:*:*:*:*:*"
          ],
          "versions": [
            {
              "version": "1.0.0",
              "lessThanOrEqual": "1.10.0",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
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          "baseScore": 9.9,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 6.0
      }
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        "ssvcData": {
          "timestamp": "2026-07-22T00:00:00+00:00",
          "id": "CVE-2026-8859",
          "options": [
            {
              "exploitation": "none"
            },
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              "automatable": "no"
            },
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              "technicalImpact": "total"
            }
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    {
      "source": "[email protected]",
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      "description": [
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          "lang": "en",
          "value": "CWE-22"
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  "references": [
    {
      "url": "https://www.ibm.com/support/pages/node/7278924",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}