Executive brief
Flowintel is an application for managing and analyzing threat intelligence data. An administrative vulnerability allows the log file location to be set to any arbitrary filesystem path, and because an attacker can control what gets logged, they can inject malicious templates that the application renders and executes as code. This requires administrator access but provides a path to complete system compromise.
Technical details
The vulnerability is a path traversal and remote code execution flaw in Flowintel's logging configuration. The LOG_FILE setting was editable through the web interface without validation, allowing administrators (or attackers with admin privileges) to redirect logs to arbitrary filesystem paths. An attacker can inject malicious template content into logs through application functionality, and when the application renders these logs, the injected template is executed as code. The patch removes LOG_FILE from web-editable settings, adds validate_log_file_name() to reject absolute paths, directory traversal sequences, and other dangerous patterns, and centralizes path resolution through resolve_log_file_path(). Attack requires admin-level access and knowledge of the application's logging and rendering behavior.
Affected products
- Flowintel Flowintel >=3.3.0
Timeline
- 2026-08-27: disclosed: CVE-2026-81743 published
- 2026-08-18: patched: Security fix committed to repository