{"id":"CVE-2026-105741","revision":"32f8e60530c64c6da5ffa40a3e809347","records":[{"revision":"32f8e60530c64c6da5ffa40a3e809347","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-105741","aliases":[],"title":"Langflow: IP Spoofing Bypass via `X-Forwarded-For` Allowing Remote Configuration Write","description":"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.","state":0,"publishedAt":"2026-10-05T20:56:00.06+00:00","modifiedAt":"2026-10-06T16:43:02.046+00:00","affected":[{"ecosystem":"Vendor product","name":"langflow","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"langflow-ai\",\n                    \"product\": \"langflow\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 1.5.0, < 1.10.3\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","score":7.1,"severity":"HIGH"}],"references":["https://github.com/langflow-ai/langflow/security/advisories/GHSA-4f6c-2vvp-gw82","https://github.com/langflow-ai/langflow/pull/13915","https://github.com/langflow-ai/langflow/commit/1f39a4b9d62c9dfa1b21fa7f85e23a180c351b72","https://github.com/langflow-ai/langflow/commit/94859df33acd70b2a1f816e26d68f5e89a7e5639","https://github.com/langflow-ai/langflow/releases/tag/v1.10.3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-105741","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-105741","identifiers":["CVE-2026-105741"]},"retained":false,"historicalAffected":[]}],"coverage":[]}