CVE-2026-33760

{
  "id": "CVE-2026-33760",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-23T17:16:52.790",
  "lastModified": "2026-10-26T11:10:00.157",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, Langflow's /api/v1/monitor router exposes 7 endpoints that perform read, write, and delete operations on user-owned resources — messages, sessions, build artifacts, and LLM transaction logs — without verifying that the authenticated requester owns the targeted resource. Any authenticated user can read, modify, rename, or permanently delete another user's data by supplying the target's resource ID or flow_id. This is a classic IDOR/BOLA vulnerability. Notably, the same source file (monitor.py) contains one correctly-implemented endpoint that uses an ownership check, demonstrating the correct pattern was known but inconsistently applied. This vulnerability is fixed in 1.9.0."
    },
    {
      "lang": "es",
      "value": "Langflow es una herramienta para construir y desplegar agentes y flujos de trabajo impulsados por IA. Antes de 1.9.0, el router /api/v1/monitor de Langflow expone 7 puntos finales que realizan operaciones de lectura, escritura y eliminación en recursos propiedad del usuario - mensajes, sesiones, artefactos de compilación y registros de transacciones de LLM - sin verificar que el solicitante autenticado sea el propietario del recurso objetivo. Cualquier usuario autenticado puede leer, modificar, renombrar o eliminar permanentemente los datos de otro usuario proporcionando el ID de recurso o flow_id del objetivo. Esta es una clásica vulnerabilidad IDOR/BOLA. Notablemente, el mismo archivo fuente (monitor.py) contiene un punto final correctamente implementado que utiliza una verificación de propiedad, demostrando que el patrón correcto era conocido pero aplicado de forma inconsistente. Esta vulnerabilidad está corregida en 1.9.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "langflow-ai",
          "product": "langflow",
          "versions": [
            {
              "version": "< 1.9.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-24T03:56:24.929322Z",
          "id": "CVE-2026-33760",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "1.9.0",
              "matchCriteriaId": "D51A889E-5C89-4A92-B32B-C91EAF735430"
            }
          ]
        }
      ]
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  ],
  "references": [
    {
      "url": "https://github.com/langflow-ai/langflow/security/advisories/GHSA-9c59-2mvc-vfr8",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ]
    }
  ]
}