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PatchSiren cyber security CVE debrief

CVE-2026-53816 OpenClaw CVE debrief

CVE-2026-53816 is a HIGH-severity vulnerability in OpenClaw, a software framework, which was published on 2026-06-11T21:16:23.830Z and modified on 2026-06-12T20:08:26.270Z. The vulnerability has a CVSS score of 8.6 and is categorized under CWE-862. The vulnerability exists in the node event handling of OpenClaw, allowing paired nodes to forge exec lifecycle events without proper authorization, potentially exposing capabilities that the reduced node surface should not provide.

Vendor
OpenClaw
Product
Unknown
CVSS
HIGH 8.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-11
Original CVE updated
2026-06-12
Advisory published
2026-06-11
Advisory updated
2026-06-12

Who should care

Users of OpenClaw before version 2026.5.18 should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by insufficient provenance validation in node event handling, allowing malicious or compromised paired nodes to send crafted node.event messages to the gateway. This could steer target sessions into exec-event paths that expose capabilities the reduced node surface should not provide.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade OpenClaw to version 2026.5.18 or later.
  • Review and restrict node event handling and authorization in OpenClaw.

Evidence notes

Evidence for this CVE comes from the NVD and the OpenClaw security advisory.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-53816 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-53816

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-53816 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53816

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.