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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenClaw | OpenClaw | < 2026.4.20 | 2026.4.20 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | openclaw | < 2026.4.20 | 2026.4.20 | GHSA-57r2-h2wj-g887 |
Advisories 1
- WID-SEC-2026-1227 OpenClaw: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
References
- GitHub Security Advisory (GHSA-57r2-h2wj-g887) vendor-advisory
- Patch Commit patch
- VulnCheck Advisory: OpenClaw < 2026.4.20 - Improper Trust Labeling in Isolated Cron Awareness Events third-party-advisory