CVE-2026-8478 in Langflow OSS
Summary
by MITRE • 08/05/2026
IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote attacker to inject arbitrary code on the system, due to the improper control of user input code.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 08/05/2026
IBM Langflow Open Source Software versions 1.0.0 through 1.10.3 contains a critical vulnerability that enables remote code execution through improper input validation mechanisms. This flaw resides in the application's handling of user-provided code inputs, where insufficient sanitization and validation allows attackers to inject malicious code that executes within the system context. The vulnerability stems from inadequate restrictions on code execution pathways, creating an environment where untrusted input can be interpreted and executed as legitimate system commands.
The technical implementation of this vulnerability demonstrates a classic command injection flaw where user-supplied parameters are directly incorporated into system execution contexts without proper sanitization or escaping mechanisms. Attackers can exploit this weakness by crafting malicious payloads that bypass input validation controls, ultimately leading to arbitrary code execution on the affected system. This represents a fundamental breakdown in the principle of least privilege and input validation, creating opportunities for privilege escalation and full system compromise.
From an operational perspective, this vulnerability poses severe risks to organizations deploying IBM Langflow OSS in production environments. Remote attackers can leverage this flaw to gain unauthorized access, execute malicious commands, establish persistent backdoors, and potentially move laterally within network infrastructures. The impact extends beyond immediate system compromise to include data exfiltration, service disruption, and potential regulatory compliance violations. The vulnerability affects both development and production deployments, making it particularly concerning for organizations with multiple environments.
Security practitioners should implement comprehensive mitigations including strict input validation controls, code sandboxing mechanisms, and network segmentation to limit attack surface exposure. Organizations must apply available patches and updates from IBM as soon as they become available, while also implementing monitoring solutions to detect suspicious code execution patterns. The vulnerability aligns with CWE-74 and CWE-94 categories related to improper neutralization of special elements used in data queries and code injection respectively, and maps to ATT&CK techniques including T1059 for command and scripting interpreter and T1021 for remote services.
Additional protective measures include implementing web application firewalls with content filtering capabilities, establishing robust logging and monitoring procedures for code execution activities, and conducting regular security assessments of custom code integration points. Organizations should also consider implementing runtime application self-protection mechanisms and regular penetration testing to identify similar vulnerabilities in their codebases. The remediation process requires thorough code review and implementation of secure coding practices that prevent user input from being directly executed as system commands, aligning with industry best practices for secure software development lifecycle processes.