CVE-2026-75128 [CRITICAL] – Langchain-Chatchat through 0.3.1.3 exposes a POST /tools/call API endpoint that invokes an

Langchain-Chatchat through 0.3.1.3 exposes a POST /tools/call API endpoint that invokes any registered tool by name without authentication, leaving the always-registered shell tool callable. Remote attackers can send a single request naming the shell tool to execute arbitrary OS commands as the server user (root in the shipped Docker image).