heartbeat

MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).

• Third-party content exposure detected (high risk: 0.80). The SKILL.md explicitly instructs use of the Membrane CLI to connect to Heartbeat and run actions such as list-threads, get-document, list-channels, etc., which fetch user-generated/untrusted content from a third-party Heartbeat service that the agent is expected to read and act on, enabling indirect prompt injection.