CVE-2026-105741
Langflow: IP Spoofing Bypass via `X-Forwarded-For` Allowing Remote Configuration Write
HIGH 7.1EPSS 0.2%
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.
- Affected
- langflow-ai · langflow
- CVSS v3.1 GITHUB
- 7.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - EPSS
- 0.21% chance of exploitation in the next 30 days, 11th percentile
- Published
- 2026-10-05
- Updated
- 2026-10-06