GHSA-ccv6-r384-xp75: Langflow: BaseFileComponent-based nodes arbitrary file read with RCE exploit

Langflow's file-reading components (like Read File and Docling) have a vulnerability where attackers can use symlinks (shortcuts that point to other files) hidden inside compressed files to read any file on the system, potentially stealing secret keys and executing arbitrary code. An attacker could steal the JWT token secret (used for authentication), forge login tokens for any user, and then run malicious code through the Python Interpreter node.