CVE-2026-13445

Full vulnerability record from the local CVENow database.

Description

IBM Langflow OSS 1.0.0 through 1.10.1 can allow an authenticated attacker to exploit the SaveToFile component to read and modify another user's uploaded files by specifying absolute paths pointing to victim storage locations. In append mode, the attacker's workflow reads victim file contents, appends attacker-controlled data, and uploads a copy containing victim data to the attacker's namespace (confidentiality breach). In overwrite mode, the attacker can replace victim file contents with arbitrary data (integrity breach). This breaks the storage ownership boundary between users.

Severity

HIGH

CVSS score

8.1 (v3.1)

Vulnerability status

Analyzed

Source identifier

[email protected]

Published

2026-07-17 21:17:05.473000

Last modified

2026-10-24 20:10:00.137000

View original CVE JSON

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  "id": "CVE-2026-13445",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-17T21:17:05.473",
  "lastModified": "2026-10-24T20:10:00.137",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM Langflow OSS 1.0.0 through 1.10.1 can allow an authenticated attacker to exploit the SaveToFile component to read and modify another user's uploaded files by specifying absolute paths pointing to victim storage locations. In append mode, the attacker's workflow reads victim file contents, appends attacker-controlled data, and uploads a copy containing victim data to the attacker's namespace (confidentiality breach). In overwrite mode, the attacker can replace victim file contents with arbitrary data (integrity breach). This breaks the storage ownership boundary between users."
    },
    {
      "lang": "es",
      "value": "IBM Langflow OSS 1.0.0 hasta 1.10.1 puede permitir a un atacante autenticado explotar el componente SaveToFile para leer y modificar los archivos subidos de otro usuario especificando rutas absolutas que apuntan a ubicaciones de almacenamiento de la víctima. En modo de anexión, el flujo de trabajo del atacante lee el contenido del archivo de la víctima, añade datos controlados por el atacante y sube una copia que contiene datos de la víctima al espacio de nombres del atacante (violación de confidencialidad). En modo de sobrescritura, el atacante puede reemplazar el contenido del archivo de la víctima con datos arbitrarios (violación de integridad). Esto rompe el límite de propiedad del almacenamiento entre usuarios."
    }
  ],
  "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:1.10.1:*:*:*:*:*:*:*"
          ],
          "versions": [
            {
              "version": "1.0.0",
              "lessThanOrEqual": "1.10.1",
              "versionType": "semver",
              "status": "affected"
            }
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        }
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    }
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          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
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        "exploitabilityScore": 2.8,
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          "id": "CVE-2026-13445",
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          "role": "CISA Coordinator",
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  "weaknesses": [
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      "source": "[email protected]",
      "type": "Secondary",
      "description": [
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  "references": [
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      "url": "https://www.ibm.com/support/pages/node/7279990",
      "source": "[email protected]",
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}