{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.5.0"
              },
              {
                "fixed": "1.10.3"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "9ad92eaeaa935db67deca300c40ed0dffea39131"
            },
            {
              "fixed": "1f39a4b9d62c9dfa1b21fa7f85e23a180c351b72"
            },
            {
              "fixed": "94859df33acd70b2a1f816e26d68f5e89a7e5639"
            },
            {
              "fixed": "a8d94f9f4fb34fe488ec317bdade4e83611ef17a"
            }
          ],
          "repo": "https://github.com/langflow-ai/langflow",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-4f6c-2vvp-gw82"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-290",
      "CWE-345"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105741.json"
  },
  "details": "Langflow is a tool for building and deploying AI-powered agents and workflows. From 1.5.0 until 1.10.3, an IP spoofing vulnerability in the Model Context Protocol (MCP) configuration installation endpoint (POST /api/v1/mcp/project/{project_id}/install) allowed authenticated remote attackers to bypass the \"local-only\" access restriction. By sending a spoofed X-Forwarded-For: 127.0.0.1 header, an attacker could make the server treat the request as originating from localhost, letting them write/overwrite an MCP client configuration file on the server's filesystem. This vulnerability is fixed in 1.10.3.",
  "id": "CVE-2026-105741",
  "modified": "2026-10-07T02:30:34.556505556Z",
  "published": "2026-10-05T20:56:00.060Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/langflow-ai/langflow/releases/tag/v1.10.3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105741.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/langflow-ai/langflow/security/advisories/GHSA-4f6c-2vvp-gw82"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-105741"
    },
    {
      "type": "FIX",
      "url": "https://github.com/langflow-ai/langflow/commit/1f39a4b9d62c9dfa1b21fa7f85e23a180c351b72"
    },
    {
      "type": "FIX",
      "url": "https://github.com/langflow-ai/langflow/commit/94859df33acd70b2a1f816e26d68f5e89a7e5639"
    },
    {
      "type": "FIX",
      "url": "https://github.com/langflow-ai/langflow/pull/13915"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Langflow: IP Spoofing Bypass via `X-Forwarded-For` Allowing Remote Configuration Write"
}