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OpenClaw Vulnerability Allows Loading of Unscanned Payloads via Malicious Metadata

A high-severity vulnerability, CVE-2026-53810, in OpenClaw's marketplace runtime extension metadata allows an attacker to craft a malicious package that, when installed by a trusted operator, redirects runtime loading to hidden, unscanned code, potentially leading to unauthorized code execution and bypassing security checks.

A critical vulnerability, CVE-2026-53810, has been identified in npm/openclaw versions prior to 2026.5.18. This flaw resides within the marketplace runtime extension metadata, allowing a malicious package to point to unscanned payloads. When a trusted operator installs such a specially crafted package, the OpenClaw Gateway's runtime loading mechanism can be redirected to execute hidden content that has bypassed expected security scans. This means plugin code could be loaded and executed outside of its reviewed package entry points, creating an avenue for unauthorized code execution. The practical impact hinges on the specific operator's configuration and whether lower-trust input can reach the vulnerable path. While this advisory emphasizes that OpenClaw's trusted-operator model remains, this specific misconfiguration introduces a significant risk if exploited.

Attack Chain

  1. An attacker crafts a malicious OpenClaw package containing legitimate-looking components alongside hidden malicious code and specially forged marketplace runtime extension metadata.
  2. The attacker delivers this malicious package (e.g., via social engineering, compromise of a trusted source, or supply chain infiltration) to an organization using OpenClaw Gateway.
  3. A trusted operator, unaware of the hidden malicious content, initiates the installation of the seemingly benign package within the OpenClaw Gateway environment.
  4. During the installation process, the vulnerable OpenClaw Gateway (versions prior to 2026.5.18) processes the malicious marketplace runtime extension metadata.
  5. Due to CVE-2026-53810, this metadata redirects the runtime loading mechanism to the hidden, unscanned malicious code within the package.
  6. The OpenClaw Gateway inadvertently loads and executes the malicious plugin code, bypassing its standard security review and scanning procedures.
  7. The executed malicious code operates within the trusted context of the OpenClaw Gateway, potentially allowing for arbitrary command execution, data exfiltration, or further system compromise.

Impact

Successful exploitation of CVE-2026-53810 could lead to unauthorized code execution within the trusted environment of an OpenClaw Gateway. If the affected feature is enabled and reachable, attackers could leverage this vulnerability to bypass security scans and load arbitrary plugin code, potentially leading to privilege escalation, data theft, or complete system compromise. The severity of the impact depends heavily on the specific configuration of the operator's OpenClaw environment and the sensitivity of the data and systems accessible by the Gateway.

Recommendation

  • Patch CVE-2026-53810 by immediately upgrading npm/openclaw to version 2026.5.18 or higher to remediate the vulnerability.
  • As a temporary mitigation, implement strict allowlists for all plugins installed on OpenClaw Gateways and explicitly define allowed channels and tools.
  • Disable the marketplace runtime extension feature if it is not explicitly required for your operational needs to reduce the attack surface.
  • Avoid sharing a single OpenClaw Gateway between mutually untrusted users or environments as a general hardening measure.