CVE-2026-0768 in Langflow
Summary
by MITRE • 01/23/2026
Langflow code Code Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the code parameter provided to the validate endpoint. The issue results from the lack of proper validation of a user-supplied string before using it to execute Python code. An attacker can leverage this vulnerability to execute code in the context of root. . Was ZDI-CAN-27322.
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Analysis
by VulDB Data Team • 01/25/2026
The vulnerability identified as CVE-2026-0768 represents a critical code injection flaw within the Langflow application that enables remote code execution without authentication requirements. This vulnerability resides in the validate endpoint's processing of the code parameter, where insufficient input validation permits malicious code execution. The flaw constitutes a direct violation of secure coding practices and presents a severe threat to system integrity and confidentiality. The vulnerability has been assigned the ZDI-CAN-27322 identifier, indicating its recognition within the cybersecurity community as a significant risk requiring immediate attention.
The technical implementation of this vulnerability stems from improper input sanitization within the application's code validation mechanism. When the validate endpoint processes the code parameter, it fails to adequately validate or sanitize user-supplied strings before executing them as Python code. This primitive approach to code execution creates an environment where attackers can inject malicious code that gets executed within the application's runtime context. The vulnerability specifically maps to CWE-94, which describes "Improper Control of Generation of Code ('Code Injection')" and aligns with ATT&CK technique T1059.006 for "Python" command execution. The absence of input validation creates a direct pathway for arbitrary code execution, as the application essentially trusts and executes any code provided through the vulnerable parameter.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise. Since authentication is not required to exploit this vulnerability, attackers can remotely access systems without prior authorization, making it particularly dangerous in environments where Langflow applications are exposed to untrusted networks. The vulnerability allows execution in the context of root privileges, meaning that successful exploitation can result in full system control, data exfiltration, and persistent access. This elevated privilege execution capability transforms a simple code injection vulnerability into a potential system takeover threat, enabling attackers to perform actions such as installing backdoors, modifying system files, or establishing persistence mechanisms. The remote nature of the exploit also means that attackers can leverage this vulnerability from anywhere on the internet without requiring physical access or network proximity.
Mitigation strategies for CVE-2026-0768 should prioritize immediate patching of affected systems, as this vulnerability represents a critical security risk that requires urgent attention. Organizations should implement strict input validation measures that sanitize all user-supplied code parameters before processing, utilizing techniques such as whitelisting allowed code patterns or implementing comprehensive code analysis tools. Network segmentation and access controls should be implemented to limit exposure of vulnerable endpoints, while monitoring systems should be deployed to detect suspicious activity related to the validate endpoint. The implementation of principle of least privilege should be enforced to minimize the impact if exploitation occurs, ensuring that application processes run with minimal necessary permissions. Additionally, organizations should consider implementing application firewalls or web application firewalls to filter and monitor traffic to the vulnerable endpoint, providing an additional layer of protection against exploitation attempts. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other components of the application stack.