CVE-2026-53816: OpenClaw node event forgery bypasses

CISO Take

OpenClaw contains a missing authorization flaw (CWE-862) in its node event handling that allows any paired node to forge exec lifecycle events and bypass the system.run authorization layer entirely. For organizations running distributed AI agent infrastructure on OpenClaw, a single compromised or malicious paired node becomes a pivot point to hijack exec capabilities across connected sessions — with full confidentiality, integrity, and availability impact (CVSS 7.2). AIID incident #1368 establishes active attacker interest in the OpenClaw ecosystem, with documented credential exfiltration via malicious skills, making this authorization bypass a direct escalation vector for that threat pattern. Patch to 2026.5.18 or later immediately; until updated, audit all paired node trust relationships and monitor gateway logs for unexpected exec-event routing originating from low-privilege nodes.

Sources: NVD GitHub Advisory ATLAS VulnCheck

What is the risk?

High risk for organizations running multi-node OpenClaw deployments. The CVSS 7.2 vector (AV:N/AC:L/PR:H) is network-accessible with low attack complexity; the PR:H requirement reflects the initial node pairing prerequisite, not the forgery itself — once a node is paired, exploitation requires no further privileges. The C:H/I:H/A:H impact triad indicates full session compromise potential. With 155 other CVEs catalogued in this same package and confirmed active ecosystem abuse in AIID #1368, OpenClaw represents a high-concentration risk in AI agent infrastructure.

How does the attack unfold?

Initial Access

Attacker compromises an existing paired worker node or introduces a malicious node that establishes a legitimate pairing relationship with the target OpenClaw gateway.

AML.T0049

Event Forgery

Attacker crafts forged node.event messages manufacturing exec lifecycle events, sending them to the gateway without holding system.run authorization.

AML.T0053

Authorization Bypass

Gateway processes the forged events due to missing provenance validation (CWE-862), routing the target agent session into exec-event paths beyond the node's authorized surface.

AML.T0107

Impact

Attacker exercises exec capabilities across connected sessions — exfiltrating credentials, persisting in the agent environment, or disrupting AI agent operations with full C/I/A impact.

AML.T0108

Initial Access

Attacker compromises an existing paired worker node or introduces a malicious node that establishes a legitimate pairing relationship with the target OpenClaw gateway.

AML.T0049

Event Forgery

Attacker crafts forged node.event messages manufacturing exec lifecycle events, sending them to the gateway without holding system.run authorization.

AML.T0053

Authorization Bypass

Gateway processes the forged events due to missing provenance validation (CWE-862), routing the target agent session into exec-event paths beyond the node's authorized surface.

AML.T0107

Impact

Attacker exercises exec capabilities across connected sessions — exfiltrating credentials, persisting in the agent environment, or disrupting AI agent operations with full C/I/A impact.

AML.T0108

What systems are affected?

Package	Ecosystem	Vulnerable Range	Patched
OpenClaw	pip	—	No patch
4 dependents 79% patched ~0d to patch Full package profile →

Do you use OpenClaw? You're affected.

How severe is it?

CVSS 3.1

7.2 / 10

EPSS

N/A

Exploitation Status

No known exploitation

Sophistication

Moderate

What is the attack surface?

AV Network

AC Low

PR High

UI None

S Unchanged

C High

I High

A High

What should I do?

1 step

1) Upgrade OpenClaw to 2026.5.18 or later — patch is available via GHSA-3c6j-hq33-3jv4. 2) Until patched, review and minimize paired node trust relationships; remove any pairings not strictly required by your deployment. 3) Apply network segmentation to isolate gateway node.event communication channels from untrusted or external node endpoints. 4) Enable audit logging of system.run invocations and alert on exec-event paths initiated from nodes with reduced surface profiles. 5) Treat all paired nodes as potentially compromised pending patch verification — validate node integrity before re-pairing.

How is it classified?

Auth Bypass Code Execution Agent Framework AML.T0049 - Exploit Public-Facing Application AML.T0053 - AI Agent Tool Invocation AML.T0108 - AI Agent

Which compliance frameworks are affected?

This CVE is relevant to:

EU AI Act

Article 15 - Accuracy, robustness and cybersecurity Article 9 - Risk management system

ISO 42001

8.4 - AI system operation A.9.3 - AI system access control

NIST AI RMF

MANAGE-2.2 - Risk treatment mechanisms MS-2.5 - AI risk and impact practices

OWASP LLM Top 10

LLM06:2025 - Excessive Agency LLM08:2025 - Excessive Agency

How many AI incidents are linked? (1)

Malicious OpenClaw Skills Reportedly Delivered AMOS Stealer and Exfiltrated Credentials via ClawHub

Feb 2026 Unknown threat actors distributing malicious OpenClaw skills, Unknown threat actors, Malicious actors high confidence

This incident documents active credential-exfiltration abuse in OpenClaw's ecosystem via malicious skills delivering AMOS stealer through ClawHub. The CVE's authorization bypass in node event handling directly enables and amplifies this attack pattern by allowing malicious paired nodes to gain exec capabilities necessary for credential theft and data exfiltration at scale.

AIID #1368

Source: AI Incident Database (AIID)

Frequently Asked Questions

What is CVE-2026-53816?

OpenClaw contains a missing authorization flaw (CWE-862) in its node event handling that allows any paired node to forge exec lifecycle events and bypass the system.run authorization layer entirely. For organizations running distributed AI agent infrastructure on OpenClaw, a single compromised or malicious paired node becomes a pivot point to hijack exec capabilities across connected sessions — with full confidentiality, integrity, and availability impact (CVSS 7.2). AIID incident #1368 establishes active attacker interest in the OpenClaw ecosystem, with documented credential exfiltration via malicious skills, making this authorization bypass a direct escalation vector for that threat pattern. Patch to 2026.5.18 or later immediately; until updated, audit all paired node trust relationships and monitor gateway logs for unexpected exec-event routing originating from low-privilege nodes.

Is CVE-2026-53816 actively exploited?

No confirmed active exploitation of CVE-2026-53816 has been reported, but organizations should still patch proactively.

How to fix CVE-2026-53816?

1) Upgrade OpenClaw to 2026.5.18 or later — patch is available via GHSA-3c6j-hq33-3jv4. 2) Until patched, review and minimize paired node trust relationships; remove any pairings not strictly required by your deployment. 3) Apply network segmentation to isolate gateway node.event communication channels from untrusted or external node endpoints. 4) Enable audit logging of system.run invocations and alert on exec-event paths initiated from nodes with reduced surface profiles. 5) Treat all paired nodes as potentially compromised pending patch verification — validate node integrity before re-pairing.

What systems are affected by CVE-2026-53816?

This vulnerability affects the following AI/ML architecture patterns: AI agent frameworks, Distributed agent orchestration, Multi-node AI agent deployments.

What is the CVSS score for CVE-2026-53816?

CVE-2026-53816 has a CVSS v3.1 base score of 7.2 (HIGH).

What is the AI security impact?

Affected AI Architectures

AI agent frameworksDistributed agent orchestrationMulti-node AI agent deployments

MITRE ATLAS Techniques

AML.T0049 Exploit Public-Facing Application

AML.T0053 AI Agent Tool Invocation

AML.T0108 AI Agent

Compliance Controls Affected

EU AI Act: Article 15, Article 9

ISO 42001: 8.4, A.9.3

NIST AI RMF: MANAGE-2.2, MS-2.5

OWASP LLM Top 10: LLM06:2025, LLM08:2025

What are the technical details?

Original Advisory

OpenClaw before 2026.5.18 contains an insufficient provenance validation vulnerability in node event handling that allows paired nodes to forge exec lifecycle events without system.run authorization. A malicious or compromised paired node can send crafted node.event messages to the gateway, steering target sessions into exec-event paths that expose capabilities the reduced node surface should not provide.

Exploitation Scenario

An attacker compromises a low-privilege paired worker node in a production OpenClaw deployment — one intentionally configured with a reduced capability surface (no system.run access). From that foothold, the attacker crafts forged node.event messages replicating exec lifecycle event sequences and sends them to the gateway. Because the gateway does not validate provenance of these events, it routes the target agent session into exec-event paths. The attacker now invokes exec capabilities the compromised node was never authorized to use: exfiltrating credentials or session state (mirroring the AIID #1368 AMOS stealer pattern), persisting in the agent environment, or disrupting downstream agent operations across all sessions handled by the gateway.