CVE-2026-47396

PraisonAI is a multi-agent teams system. Prior to version 4.6.40, PraisonAI's call server exposes a network-facing agent control API without authentication when CALL_SERVER_TOKEN is not configured. The affected component is the praisonai.api.agent_invoke router as mounted by praisonai.api.call. The authentication helper verify_token() fails open when CALL_SERVER_TOKEN is unset. Since every sensitive agent-control endpoint depends on this helper, starting the call server without a token allows any reachable client to list agents, inspect agent metadata and instructions, invoke agents, and unregister agents. This is security-relevant because the bundled call server includes the vulnerable router and binds to 0.0.0.0. As a result, operators who launch the call server without explicitly setting CALL_SERVER_TOKEN may unintentionally expose an unauthenticated remote agent control plane. Version 4.6.40 fixes the issue.