CVE-2026-33017 Scanner

Langflow is widely used by software developers and engineers for designing and deploying complex AI pipelines and workflows. Its purpose is to provide a visual platform to create and manage AI models efficiently. Typically, it's adopted in environments where artificial intelligence and machine learning functionalities are crucial, such as in data analysis, automation, and predictive analytics. Users range from small tech startups to large enterprise companies seeking scalable AI solutions. Additionally, Langflow facilitates rapid iterations of AI models, making it a vital tool for data scientists and AI specialists. Its integration with popular AI frameworks underlines its pervasive use in cutting-edge AI applications.

The Remote Code Execution (RCE) vulnerability allows attackers to execute arbitrary Python code remotely without needing authentication. This vulnerability can be particularly damaging as it provides unauthorized users with the ability to manipulate or control the host environment completely. Successful exploitation can lead to a compromise of system integrity, as the attacker can execute code at the same privilege level as the service. Such vulnerabilities are often leveraged for installing malware, stealing sensitive information, or disabling services. The critical nature of this vulnerability lies in its potential to cause substantial harm through unauthorized code execution across networks.

The vulnerability exists in the Langflow API, specifically within the build_public_tmp endpoint, where improperly sanitized flow JSON submissions can contain dangerous Python code. By crafting a malicious payload, attackers can invoke system commands during the build process. This is facilitated through the violation of sandboxing protocols which should ordinarily prevent such execution. The affected endpoint fails to implement the necessary input validations and code execution safeguards, leading to the possibility of running arbitrary commands. As a result, it opens potential pathways to execute operating system commands unimpeded. The issue arises from insufficient security measures during input processing, rendering the system susceptible to exploitation.

The exploitation of this vulnerability could lead to severe outcomes, including full system compromise and unauthorized access to sensitive data. Miscreants could gain control over the affected system, enabling them to alter, delete, or siphon off data maliciously. It also opens avenues for attackers to use the compromised system as a pivot to launch further attacks within a network. The breach could disrupt operations by disabling critical services or corrupting system functionalities, impacting business continuity. Organizations utilizing Langflow stand at risk of substantial financial and reputational damages due to such a compromise.

REFERENCES

• https://thehackernews.com/2026/03/critical-langflow-flaw-cve-2026-33017.html
• https://www.sysdig.com/blog/cve-2026-33017-how-attackers-compromised-langflow-ai-pipelines-in-20-hours
• https://nvd.nist.gov/vuln/detail/CVE-2026-33017