CVE-2026-7755 in Langflow
Summary
by MITRE • 07/17/2026
IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow remote code execution due to incomplete validation enforcement on MCP server configuration files.
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Analysis
by VulDB Data Team • 07/18/2026
This vulnerability exists in IBM Langflow Open Source Software versions 1.0.0 through 1.10.0 where the application fails to properly validate MCP server configuration files, creating a potential remote code execution vector. The flaw stems from insufficient input validation mechanisms that allow malicious actors to manipulate configuration parameters and execute arbitrary commands on affected systems. This type of vulnerability falls under CWE-20, which represents "Improper Input Validation," and represents a critical security weakness that can be exploited through various attack vectors including crafted configuration files or manipulated network requests.
The technical implementation of this vulnerability occurs when Langflow processes MCP server configuration data without adequate sanitization or validation checks. Attackers can leverage this weakness by crafting malicious configuration files that contain unauthorized command execution directives or by exploiting the application's trust in configuration inputs. When the system processes these malformed configurations, it executes unintended code with the privileges of the Langflow process, potentially leading to complete system compromise. The vulnerability is particularly concerning because it allows for remote exploitation without requiring authentication, making it accessible to attackers across network boundaries.
The operational impact of this vulnerability extends beyond simple privilege escalation to include full system compromise and potential data breaches. An attacker who successfully exploits this vulnerability can gain unauthorized access to sensitive information, modify or delete critical application data, and establish persistent backdoors within the affected environment. The remote code execution capability means that attackers can execute arbitrary commands on the target system, potentially leading to lateral movement within networks and escalation of privileges to administrative levels. This vulnerability directly aligns with ATT&CK technique T1059.001 for Command and Scripting Interpreter and T1566 for Phishing, as it enables unauthorized code execution through legitimate application interfaces.
Organizations should immediately implement mitigations including updating to the latest supported versions of Langflow where this vulnerability has been addressed, implementing strict input validation controls on configuration file processing, and deploying network segmentation to limit access to affected systems. Additional protective measures include monitoring for unusual process execution patterns, implementing privileged access management controls, and conducting regular security assessments of application configurations. System administrators should also consider implementing web application firewalls to filter potentially malicious configuration requests and establish comprehensive logging mechanisms to detect exploitation attempts. The vulnerability demonstrates the critical importance of input validation in preventing unauthorized code execution and highlights the need for robust security practices throughout the software development lifecycle.