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PatchSiren cyber security CVE debrief

CVE-2026-53836 OpenClaw CVE debrief

CVE-2026-53836 is a HIGH severity vulnerability in OpenClaw that allows remote authenticated operators to bypass execution allowlist checks using unrecognized encoded-command alias forms to execute arbitrary PowerShell content. The vulnerability has a CVSS score of 8.7.

Vendor
OpenClaw
Product
Unknown
CVSS
HIGH 8.7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-12
Original CVE updated
2026-06-16
Advisory published
2026-06-12
Advisory updated
2026-06-16

Who should care

Users of OpenClaw before version 2026.5.12 should apply the patch to prevent exploitation of this vulnerability.

Technical summary

OpenClaw before 2026.5.12 contains an allowlist bypass vulnerability in PowerShell encoded-command handling. This vulnerability allows attackers to execute encoded commands using abbreviated flag aliases not recognized by the allowlist parser.

Defensive priority

HIGH

Recommended defensive actions

  • Apply the patch for OpenClaw version 2026.5.12 or later.
  • Restrict access to authenticated operators to minimize the attack surface.
  • Monitor for suspicious PowerShell activity.

Evidence notes

Evidence of this vulnerability can be found in the CVE record [cve-org] and the NVD detail page [nvd].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-53836 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-53836

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

  • CVE-2026-53836 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53836

    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.