Critical Path Traversal Vulnerability in Flowise Enables Remote Code Execution: CVE-2025-71338 Deep Dive
Overview
CVE-2025-71338 represents a critical vulnerability in Flowise with a CVSS score of 10.0. Unauthenticated attackers can exploit this flaw to overwrite critical files and achieve remote code execution, posing severe risks to enterprise and Defense Industrial Base (DIB) environments.
Technical Analysis
The vulnerability lies in the /api/v1/document-store/loader/process endpoint, where unsanitized fileName parameters allow path traversal via ../ sequences. Attackers can weaponize this to overwrite core files like package.json. When the application restarts, modified files execute malicious payloads, enabling remote code execution. The lack of authentication requirements amplifies exploitability in exposed deployments.
Enterprise & DIB Impact
DIB and enterprise systems leveraging Flowise face heightened risks of data exfiltration, persistent access, and operational disruption. Attackers could target critical infrastructure workflows, compromising sensitive defense-related data or disrupting mission-critical processes.
Recommended Actions
- Apply vendor-provided security patches immediately
- implement strict input validation for file-handling endpoints
- restrict directory traversal using access control lists
- monitor server logs for anomalous file-write patterns
- and conduct comprehensive code audits for similar vulnerabilities.
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