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Luu, T.J.

HighVulnerability

CVE-2026-105741: Langflow is a tool for building and deploying AI-powered agents and workflows. From 1.5.0 until 1.10.3, an IP spoofing…

Source: NVD(opens in a new tab)
Identifier: CVE-2026-105741
Published: October 5, 2026
Record updated: October 9, 2026

Summary

Langflow versions 1.5.0 through 1.10.3 contain an IP spoofing flaw in the MCP configuration installation endpoint, POST /api/v1/mcp/project/{project_id}/install. An authenticated remote attacker can send a spoofed X-Forwarded-For: 127.0.0.1 header, making the server treat the request as local and bypass the "local-only" restriction. This lets the attacker write or overwrite an MCP client configuration file on the server's filesystem.

Mitigation

Fixed in 1.10.3.

Details

Scores and exploitation

CVSS score: 7.1(high)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Attack vector: network
Attack complexity: low
Privileges required: low
User interaction: none
EPSS: Not scored. FIRST has not published an EPSS score for this CVE yet.
Disclosure date: October 5, 2026

Weaknesses and techniques

Weakness (CWE): CWE-290
CWE-345
AI threat technique (MITRE ATLAS): AML.T0010

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: Framework
Impact: Integrity
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-105741

First tracked: October 5, 2026 at 08:07 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 90% (self-assessed)

Topics

Model Context Protocol

Summary

Mitigation

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