Duplicate Advisory: OpenClaw: Isolated cron awareness events were recorded as trusted system events

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-57r2-h2wj-g887. This link is maintained to preserve external references. ### Original Description OpenClaw before 2026.4.20 fails to properly preserve untrusted labels for isolated cron awareness events, allowing webhook-triggered cron agent output to be recorded as trusted system events. Attackers can exploit this trust-labeling issue to strengthen prompt-injection attacks by rendering untrusted events as trusted System events.