What is CVE-2026-105741?

CVE-2026-105741 is a high-severity vulnerability in Langflow-Ai Langflow, classified under Authentication Bypass by Spoofing. CVSS score: 7.1/10. Published 2026-10-05.

How severe is CVE-2026-105741?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Langflow-Ai Langflow

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 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.

Published 2026-10-05 · last modified 2026-10-06.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Langflow-Ai Langflow — versions >= 1.5.0, < 1.10.3

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-105741?: CVE-2026-105741 is a high-severity vulnerability in Langflow-Ai Langflow, classified under Authentication Bypass by Spoofing. CVSS score: 7.1/10. Published 2026-10-05.
How severe is CVE-2026-105741?: High severity. CVSS v3 base score is 7.1 out of 10.