Langflow has Unauthenticated IDOR on Image Downloads

{
  "id": "401be4ae39f196493b0b30336cb8b7de4e8488b7bfb5707aac14323ef43b7715",
  "url": "https://osv.dev/vulnerability/CVE-2026-33484",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Langflow has Unauthenticated IDOR on Image Downloads",
    "summary": "Langflow is a tool for building and deploying AI-powered agents and workflows. In versions 1.0.0 through 1.8.1, the `/api/v1/files/images/{flow_id}/{file_name}` endpoint serves image files without any authentication or ownership check. Any unauthenticated request with a known flow_id and file_name returns the image with HTTP 200. In a multi-tenant deployment, any attacker who can discover or guess a `flow_id` (UUIDs can be leaked through other API responses) can download any user's uploaded images without credentials. Version 1.9.0 contains a patch.",
    "evidence": "osv:CVE-2026-33484",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-33484",
      "aliases": [
        "CVE-2026-33484",
        "GHSA-7grx-3xcx-2xv5",
        "PYSEC-2026-80"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/langflow-ai/langflow",
              "type": "GIT",
              "events": [
                {
                  "introduced": "24d9e86885b877ea3e9d03cbc50b963765489721"
                },
                {
                  "fixed": "a47f2ad17eb662e940c550cfccb64a87dddd7e0b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.0.0"
                      },
                      {
                        "fixed": "1.9.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "cpe": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.0"
                      },
                      {
                        "fixed": "1.9.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33484.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.785029425Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33484.json",
        "https://github.com/langflow-ai/langflow/security/advisories/GHSA-7grx-3xcx-2xv5",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-33484"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-284",
          "CWE-639",
          "CWE-862"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33484.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-33484",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498568,
  "published_at": "2026-03-24T12:57:33.641+00:00"
}