{"cve":"CVE-2026-105741","nvd":{"published":"2026-10-05T21:16:35.740","modified":"2026-10-06T17:17:18.810","status":"Awaiting Analysis","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.","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":["CWE-290","CWE-345"],"references":["https://github.com/langflow-ai/langflow/commit/1f39a4b9d62c9dfa1b21fa7f85e23a180c351b72","https://github.com/langflow-ai/langflow/commit/94859df33acd70b2a1f816e26d68f5e89a7e5639","https://github.com/langflow-ai/langflow/pull/13915","https://github.com/langflow-ai/langflow/releases/tag/v1.10.3","https://github.com/langflow-ai/langflow/security/advisories/GHSA-4f6c-2vvp-gw82"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:57:46.668721662+00:00"},"epss":{"cve":"CVE-2026-105741","score":0.00244,"percentile":0.15441,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-4f6c-2vvp-gw82","url":"https://osv.dev/vulnerability/GHSA-4f6c-2vvp-gw82","summary":"Langflow: IP Spoofing Bypass via `X-Forwarded-For` Allowing Remote Configuration Write","modified":"2026-10-15T14:56:06.869692666Z","packages":[{"ecosystem":"PyPI","name":"langflow","purl":"pkg:pypi/langflow","ranges":[">=1.5.0 <1.10.3"],"fixed":["1.10.3"]}]},{"id":"PYSEC-2026-4229","url":"https://osv.dev/vulnerability/PYSEC-2026-4229","summary":"Langflow: IP Spoofing Bypass via `X-Forwarded-For` Allowing Remote Configuration Write","modified":"2026-10-15T14:45:07.350041709Z","packages":[{"ecosystem":"PyPI","name":"langflow","purl":"pkg:pypi/langflow","ranges":[">=1.5.0 <1.10.3"],"fixed":["1.10.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}