CVE-2026-17625 in Langflow OSS
Summary
by MITRE • 08/05/2026
IBM Langflow OSS 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, and 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary commands due to improper neutralization of special elements used in an OS command.
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Analysis
by VulDB Data Team • 08/05/2026
IBM Langflow Open Source Software versions 1.0.0 through 1.10.3 contain a critical vulnerability that enables remote authenticated attackers to execute arbitrary commands on affected systems. This vulnerability stems from improper neutralization of special elements used in operating system commands, creating a command injection flaw that directly violates established security principles and industry standards. The weakness allows an attacker who has already gained authentication credentials to manipulate input fields that are subsequently processed through OS command execution mechanisms.
The technical implementation of this vulnerability involves the improper handling of user-supplied input within command construction processes. When authenticated users submit data that contains special shell metacharacters such as semicolons, ampersands, or backticks, these elements are not adequately sanitized or escaped before being incorporated into system commands. This flaw directly maps to CWE-77 and CWE-88 within the Common Weakness Enumeration catalog, which specifically address command injection vulnerabilities through improper neutralization of special characters in command construction.
Attackers exploiting this vulnerability can leverage their authenticated access to construct malicious command sequences that bypass normal security controls and execute arbitrary code with the privileges of the affected service. The impact extends beyond simple code execution to potentially allow full system compromise, data exfiltration, or lateral movement within network environments where Langflow is deployed. This represents a significant risk in enterprise environments where the software may be exposed to untrusted users or where privilege escalation could occur through compromised authenticated sessions.
The operational implications of this vulnerability are severe given that it affects multiple versions within the 1.0.0 through 1.10.3 release range, indicating a prolonged period during which systems remained vulnerable. Organizations deploying Langflow in production environments face immediate risk if they have not implemented proper patching procedures or alternative mitigations. The vulnerability's classification aligns with ATT&CK technique T1059.007 for command and scripting interpreter execution, as attackers can leverage the system's legitimate command processing capabilities to achieve their malicious objectives.
Organizations should prioritize immediate remediation through official IBM patches or updates addressing this command injection vulnerability. Additional mitigations include implementing strict input validation and sanitization measures, employing principle of least privilege access controls, and monitoring system logs for suspicious command execution patterns. Network segmentation and firewall rules can help limit the potential impact of successful exploitation attempts, while regular security assessments should verify that proper neutralization techniques have been implemented throughout all user-facing interfaces and API endpoints.