CVE-2026-22180 in OpenClaw
Summary
by MITRE • 03/18/2026
OpenClaw versions prior to 2026.3.2 contain a path-confinement bypass vulnerability in browser output handling that allows writes outside intended root directories. Attackers can exploit insufficient canonical path-boundary validation in file write operations to escape root-bound restrictions and write files to arbitrary locations.
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Analysis
by VulDB Data Team • 03/22/2026
The vulnerability identified as CVE-2026-22180 affects OpenClaw versions prior to 2026.3.2 and represents a critical path traversal flaw in the browser output handling component. This issue stems from inadequate canonical path boundary validation mechanisms that fail to properly constrain file write operations within designated root directories. The flaw exists at the intersection of input validation and file system access control, creating a pathway for unauthorized file system modifications that bypass intended security boundaries.
The technical implementation of this vulnerability manifests through insufficient validation of file paths during write operations within the browser output handling module. When processing user-supplied or dynamically generated file paths, the system fails to properly canonicalize and validate the absolute paths against the intended root directory boundaries. This allows attackers to construct malicious file paths that, while appearing to target locations within the constrained directory, actually resolve to arbitrary locations on the file system. The vulnerability specifically impacts the path-confinement mechanisms that are designed to prevent directory traversal attacks and maintain proper access controls.
From an operational impact perspective, this vulnerability enables attackers to escalate privileges and gain unauthorized access to critical system resources. The bypass of root directory restrictions allows for arbitrary file creation, modification, and potentially execution of malicious code in locations that should be protected. Attackers can leverage this weakness to plant backdoors, modify system configuration files, or overwrite critical binaries, potentially leading to complete system compromise. The vulnerability's impact extends beyond simple file system manipulation as it can facilitate further exploitation through privilege escalation and persistence mechanisms.
The security implications of this vulnerability align with CWE-22 Path Traversal and CWE-73 Path Traversal in File Name, both of which are classified under the broader category of path traversal attacks that exploit insufficient input validation. From an attack framework perspective, this vulnerability maps to ATT&CK technique T1059 Command and Scripting Interpreter and T1078 Valid Accounts, as it enables attackers to establish persistent access through file system manipulation. The vulnerability also corresponds to ATT&CK technique T1566 Phishing with Malicious Attachments, where attackers might use this weakness to deliver malicious payloads through compromised web interfaces.
Mitigation strategies should focus on implementing robust canonical path validation mechanisms that properly resolve and verify file paths against intended boundaries. System administrators should immediately upgrade to OpenClaw version 2026.3.2 or later, which includes the patched path validation routines. Additional protective measures include implementing strict input sanitization for all file operations, deploying proper file system access controls, and establishing comprehensive monitoring for unauthorized file system modifications. Organizations should also consider implementing application-level firewalls and input validation layers to provide defense-in-depth against similar path traversal vulnerabilities. Regular security assessments and penetration testing should be conducted to identify and remediate similar weaknesses in other applications and systems.