OpenClaw < 2026.5.12 - Allowlist Bypass via PowerShell Encoded-Command Aliases
CVE-2026-53836

8.7HIGH

Key Information:

Vendor

Openclaw

Status
Openclaw
Vendor
CVE Published:
12 June 2026

What is CVE-2026-53836?

OpenClaw before 2026.5.12 contains an allowlist bypass vulnerability in PowerShell encoded-command handling that allows attackers to execute encoded commands using abbreviated flag aliases not recognized by the allowlist parser. Remote authenticated operators can bypass execution allowlist checks by using unrecognized encoded-command alias forms to execute arbitrary PowerShell content.

Affected Version(s)

OpenClaw 0 < 2026.5.12

OpenClaw 2026.5.12

References

https://github.com/openclaw/openclaw/security/advisories/...
vendor-advisory
https://www.vulncheck.com/advisories/openclaw-allowlist-b...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Edward-x (@YLChen-007)
.