GHSA-QM77-8QJP-4VCM OpenClaw: Slack thread context could include messages from non-allowlisted senders

Summary Before OpenClaw 2026.4.2, Slack thread starter and thread-history context fetched through the API was not filtered by the effective sender allowlist. Messages from non-allowlisted senders could still enter the agent context when an allowlisted user replied in the same thread. Impact A Sla...