CVE-2026-53820
Received Received - Intake
Exec Denylist Bypass in OpenClaw MCP Session-Spawn

Publication date: 2026-06-12

Last updated on: 2026-06-12

Assigner: VulnCheck

Description
OpenClaw before 2026.5.12 contains an exec denylist bypass vulnerability in the bundle MCP loopback session-spawn path that allows authenticated callers to bypass intended command restrictions. Attackers can reach the affected bundled MCP session-spawn path to start sessions with broader command reach than intended.
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Meta Information
Published
2026-06-12
Last Modified
2026-06-12
Generated
2026-06-13
AI Q&A
2026-06-13
EPSS Evaluated
N/A
NVD
CVE-2026-53820
EUVD
EUVD-2026-36608
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
openclaw openclaw to 2026.5.12 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
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Executive Summary

This vulnerability exists in OpenClaw versions before 2026.5.12 and involves an exec denylist bypass in the bundle MCP loopback session-spawn path. Authenticated users can exploit this flaw to bypass intended command restrictions, allowing them to start sessions with broader command execution capabilities than originally intended.

Impact Analysis

The vulnerability allows attackers with some level of authentication to execute commands beyond the intended restrictions. This can lead to unauthorized actions within the system, potentially compromising system integrity, confidentiality, or availability depending on the commands executed.

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