Flowise AI Agent Builder Faces CVSS 10.0 RCE Exploitation

CVE-2025-59528 vulnerability security illustration — Photo by Growtika on Unsplash

Threat actors are currently exploiting a critical security flaw in Flowise, an open-source artificial intelligence (AI) platform, as reported by VulnCheck. This vulnerability, identified as CVE-2025-59528, has been assigned a maximum severity score of 10.0 on the Common Vulnerability Scoring System (CVSS). The CVE-2025-59528 vulnerability is a code injection issue that could allow for remote code execution (RCE) on affected systems, posing significant risks to users and organizations utilizing the platform.

CVE-2025-59528 Vulnerability Overview

The CVE-2025-59528 vulnerability specifically affects the CustomMCP node within the Flowise AI Agent Builder. This node enables users to input configuration settings for connecting various components of the AI platform. The flaw allows attackers to inject malicious code, which could then be executed remotely, giving them unauthorized access to the affected systems. With over 12,000 instances reportedly exposed, the potential for widespread exploitation is alarming.

Remote code execution vulnerabilities are particularly dangerous as they enable attackers to run arbitrary code on compromised systems. This could lead to unauthorized access to sensitive data, manipulation of system functions, and further exploitation of network security weaknesses. Organizations using Flowise must take immediate action to mitigate the risks associated with this vulnerability.

Impact on Users and Cybersecurity

The exploitation of the CVE-2025-59528 vulnerability can have severe consequences for both individual users and organizations relying on the Flowise platform. Compromised systems may experience data breaches, loss of integrity, and unauthorized control over critical functions. Such incidents can lead to significant financial losses, reputational damage, and regulatory ramifications for affected organizations.

For users who utilize VPN services, the risks are compounded if they are unaware of the vulnerabilities in the applications they use. Cybersecurity measures must be reinforced, especially in environments where sensitive data is handled. The potential for attackers to exploit the CVE-2025-59528 vulnerability underscores the importance of robust network security practices and proactive monitoring of software vulnerabilities.

Context

The emergence of vulnerabilities like CVE-2025-59528 highlights the ongoing challenges in maintaining secure software environments, particularly in the rapidly evolving landscape of AI technologies. As more organizations adopt open-source solutions for their AI needs, the importance of regular updates, security patches, and user awareness becomes increasingly critical. Vulnerabilities can arise from various sources, including misconfigurations, outdated software, and insufficient security measures.

What to do

To protect against the CVE-2025-59528 vulnerability, users and organizations should take the following actions:

Update all affected software to the latest versions immediately to close any security gaps.
Enable automatic updates where possible to ensure timely installation of security patches.
Monitor security advisories from affected vendors to stay informed about new threats and updates.
Use a VPN service to protect your internet traffic. Consider reliable options like Surfshark or ProtonVPN.
Implement additional security measures such as multi-factor authentication to enhance account protection.