Improper access control in OpenClaw - #VU126838
Published: April 22, 2026
Vulnerability identifier: #VU126838
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to bypass configured tool policy restrictions.
The vulnerability exists due to improper access control in bundled MCP/LSP tool handling when merging bundled tools into the agent's effective tool set after policy filtering. A local user can use a bundled MCP or LSP tool source that should have been restricted by policy to bypass configured tool policy restrictions.
Exploitation requires a configured bundled MCP or LSP tool source and an operator policy that would otherwise restrict that tool.
Affected software
OpenClaw
Remediation
Install security update from vendor's website.
OpenClaw - update to 2026.4.20