CVE-2026-105741
HIGH
7,1
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: low
Description
AI Translation Available
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.
290
Authentication Bypass by Spoofing
IncompleteCommon Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Bypass Protection Mechanism
Gain Privileges Or Assume Identity
Applicable Platforms
All platforms may be affected
345
Insufficient Verification of Data Authenticity
DraftCommon Consequences
Security Scopes Affected:
Integrity
Other
Potential Impacts:
Varies By Context
Unexpected State
Applicable Platforms
Technologies:
ICS/OT
https://github.com/langflow-ai/langflow/commit/1f39a4b9d62c9dfa1b21fa7f85e23a18…
https://github.com/langflow-ai/langflow/commit/94859df33acd70b2a1f816e26d68f5e8…
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