CVE-2026-28449 — OpenClaw < 2026.2.25 - Webhook Replay Attack via Missing Durable Replay Suppression
OpenClaw versions prior to 2026.2.25 lack durable replay state for Nextcloud Talk webhook events, allowing valid signed webhook requests to be replayed without suppression. Atta…
Published: 2026-03-19 · CVSS: 6.3 · CVSS 4.0
OpenClaw versions prior to 2026.2.25 lack durable replay state for Nextcloud Talk webhook events, allowing valid signed webhook requests to be replayed without suppression. Attackers can capture and replay previously valid signed webhook requests to trigger duplicate inbound message processing and cause integrity or availability issues.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7