CVE-2026-7873 in Langflow OSS
Summary
by MITRE • 06/30/2026
IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated attackers to execute arbitrary OS commands and read sensitive files including credentials, enabling complete system compromise and lateral movement.
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Analysis
by VulDB Data Team • 07/01/2026
This vulnerability exists within IBM Langflow Open Source Software versions 1.0.0 through 1.10.0 and represents a critical command injection flaw that allows authenticated attackers to execute arbitrary operating system commands on the affected system. The vulnerability stems from insufficient input validation and sanitization mechanisms within the application's handling of user-supplied data, particularly in contexts where command execution is performed without proper security controls. Attackers who have gained authentication credentials can exploit this weakness to run malicious commands with the privileges of the affected service account, potentially leading to complete system compromise.
The technical implementation of this vulnerability typically involves improper handling of user inputs that are subsequently passed to system execution functions or shell commands without adequate sanitization. This creates a direct path for command injection attacks where attackers can append malicious commands to legitimate input fields, causing the application to execute unintended operations on the underlying operating system. The impact extends beyond simple command execution as authenticated attackers can leverage this vulnerability to read sensitive files including configuration data, credential stores, and other security-sensitive information that may be stored within the system's filesystem. This capability enables attackers to escalate their privileges and move laterally within the network infrastructure.
The operational impact of this vulnerability is severe and multifaceted, encompassing both immediate system compromise and long-term network security implications. Successful exploitation allows attackers to gain full control over the affected system, potentially leading to data exfiltration, deployment of additional malware, or use of the compromised system as a pivot point for attacking other network resources. The ability to read sensitive files including credentials significantly amplifies the attack surface, as stolen credentials can be used to access other systems within the organization's infrastructure. This vulnerability aligns with CWE-77 and CWE-78 categories from the Common Weakness Enumeration catalog, specifically addressing improper neutralization of special elements used in OS commands and command injection flaws respectively.
From an adversary perspective, this vulnerability maps directly to several ATT&CK tactics including execution through command and script interpreter, privilege escalation via credential access, and lateral movement using stolen credentials. The authenticated nature of the attack means that attackers must first obtain valid credentials through other means such as phishing, credential reuse, or exploitation of other vulnerabilities, but once achieved they can leverage this command injection flaw to maximize their impact. Organizations should implement immediate mitigations including upgrading to patched versions of IBM Langflow, implementing proper input validation and sanitization controls, restricting unnecessary file system access for application accounts, and monitoring for suspicious command execution patterns in system logs. Network segmentation and principle of least privilege configurations can help limit the potential damage from successful exploitation while regular security assessments should be conducted to identify similar vulnerabilities in other applications within the organization's attack surface.