A critical path traversal vulnerability in IBM Langflow OSS (CVE-2026-7667) allows authenticated attackers to access sensitive system files.

This is a Path Traversal (CWE-22) vulnerability where the application fails to properly sanitize user-supplied input when handling file paths. An authenticated attacker can exploit this to access or manipulate files on the host filesystem that should be restricted.

Exploitation of this vulnerability can result in the exposure of sensitive configuration files, credentials, or application data, which may lead to full system compromise or unauthorized data exfiltration. Given the CVSS score of 8.8, the potential for significant impact on system security is high.

Immediate Action: Update IBM Langflow OSS to version 1.10.1 or higher to patch the path traversal vulnerability.

Proactive Monitoring: Review web server logs for requests containing directory traversal sequences, such as dot-dot-slash patterns, directed at the application.

Compensating Controls: Implement file system permissions that restrict the application service account to only the directories required for its operation, effectively limiting the scope of any potential traversal attempt.

Public Exploit Available: Unknown.

Administrators must treat this vulnerability with high priority and apply the vendor-provided security update immediately. Ensuring all instances are patched to version 1.10.1 is the only reliable way to prevent unauthorized file system access.