CVE-2026-53836

OpenClaw < 2026.5.12 - Allowlist Bypass via PowerShell Encoded-Command Aliases

State: Published
Severity: 8.7 High
Published: Jun 12, 2026
Updated: Jun 15, 2026
Reserved: Jun 10, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	VulnCheck
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	VulnCheck

Weaknesses

CWE-184 Incomplete List of Disallowed Inputs

Affected Products

Product	Versions
OpenClawOpenClaw	before 2026.5.12Affected 2026.5.12Not affected

References

GitHub Security Advisory (GHSA-j472-gf56-x589)vendor-advisory
VulnCheck Advisory: OpenClaw < 2026.5.12 - Allowlist Bypass via PowerShell Encoded-Command Aliasesthird-party-advisory

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