CVEvulnerability
CVE-2026-105741
7.1 HIGH
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-10-05
- Last modified
- 2026-10-06
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
- Weaknesses
- CWE-290, CWE-345
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.
Related
References
- https://github.com/langflow-ai/langflow/commit/1f39a4b9d62c9dfa1b21fa7f85e23a180c351b72 github.com
- https://github.com/langflow-ai/langflow/commit/94859df33acd70b2a1f816e26d68f5e89a7e5639 github.com
- https://github.com/langflow-ai/langflow/pull/13915 github.com
- https://github.com/langflow-ai/langflow/releases/tag/v1.10.3 github.com
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-4f6c-2vvp-gw82 github.com
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-4f6c-2vvp-gw82 github.com