CVE-2026-53814
HighCVSS 8.3Exploitation Probability (EPSS)
Low risk13th percentile - higher than 13% of all known CVEs
Summary
OpenClaw before 2026.5.20 contains a privilege escalation vulnerability where hook-triggered agents incorrectly receive owner-scoped MCP loopback authority. Attackers with a valid hook token can exploit the /hooks/agent endpoint to access owner-only MCP tools.
Risk Assessment
This vulnerability could allow attackers to perform privileged actions, such as persistent cron state modifications, posing a serious security threat to the system.
Recommendation
It is recommended to update OpenClaw to version 2026.5.20 or later to mitigate this vulnerability and to monitor access to the /hooks/agent endpoint.
Original NVD description (English source)
OpenClaw before 2026.5.20 contains a privilege escalation vulnerability where hook-triggered agent runs incorrectly receive owner-scoped MCP loopback authority instead of hook-appropriate scope. Attackers with a valid hook token can exploit the /hooks/agent endpoint to cause spawned CLI runtimes to access or invoke owner-only MCP tools, potentially executing privileged actions like persistent cron state modifications.