Linux Web Process Local File Read via /proc/self for GCP Credential Theft

Ibrahim Saud@tektrix

•updated Jun 30, 2026•0•0•2

Detects web application processes (such as nginx, gunicorn, uvicorn, python, node, or java) attempting to read sensitive information from /proc/self, specifically /proc/self/environ, /proc/self/cmdline, or /proc/self/maps. This behavior is indicative of a Local File Read (LFR) vulnerability exploitation, which an attacker may use to exfiltrate environment variables containing secrets or Cloud Run service account credentials.