Security

A technical breakdown of CVE-2026-44109, a CVSS 9.2 Critical authentication bypass vulnerability in OpenClaw (< 2026.4.15). Two fail-open logic inversions in the Feishu/Lark plugin — one in the webhook signature validator and one in the card-action replay guard — allow an unauthenticated attacker to inject arbitrary events into OpenClaw's command dispatch engine. When the bot has execution tools enabled, this translates directly to unauthenticated remote code execution on the host machine with the privileges of the OpenClaw process.