CVE-2026-43534

OpenClaw · OpenClaw

OpenClaw contains an input validation vulnerability allowing external hook metadata to be enqueued as trusted system events, leading to privilege escalation.

Executive summary

A critical input validation vulnerability in OpenClaw allows attackers to escalate untrusted input into a higher-trust agent context, potentially leading to unauthorized system actions.

Vulnerability

This is an input validation vulnerability where the application fails to properly verify the source of hook metadata. Attackers can supply malicious hook names that are then treated as trusted system events, allowing for context escalation.

Business impact

The CVSS score of 9.1 reflects the critical nature of this privilege escalation issue. Exploitation allows an attacker to operate within a higher-trust context, facilitating unauthorized actions that could lead to system-wide compromise or data exfiltration.

Remediation

Immediate Action: Apply the vendor-provided patch by updating OpenClaw to version 2026.4.10 or higher.

Proactive Monitoring: Monitor for suspicious metadata entries in system event queues or unusual hook registration activity.

Compensating Controls: Enforce strict input validation and metadata verification at the application layer to ensure only authenticated, trusted events are processed.

Exploitation status

Public Exploit Available: No

Analyst recommendation

Immediate patching is required to mitigate this privilege escalation risk. Ensure that all system updates are tested and deployed in accordance with the vendor's security guidance.