CVE-2026-18038 in GoClaw
Summary
by MITRE • 07/28/2026
A flaw has been found in nextlevelbuilder GoClaw up to 3.13.2. Affected by this vulnerability is the function ExecTool.Execute of the file goclaw/internal/http/tools_invoke.go of the component jq Handler. Executing a manipulation can lead to information disclosure. The attack can be launched remotely. The exploit has been published and may be used. This patch is called 1230. It is advisable to implement a patch to correct this issue.
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Analysis
by VulDB Data Team • 07/28/2026
The vulnerability identified in nextlevelbuilder GoClaw version 3.13.2 represents a critical information disclosure flaw within the jq Handler component. This weakness manifests in the ExecTool.Execute function located in goclaw/internal/http/tools_invoke.go, where improper input validation and processing creates an avenue for unauthorized data exposure. The vulnerability's remote exploitability means that attackers can leverage this flaw from external networks without requiring physical access to the system, making it particularly dangerous in enterprise environments where such tools may be exposed to untrusted networks.
The technical implementation of this vulnerability stems from insufficient sanitization of user-supplied inputs within the jq Handler functionality. When the ExecTool.Execute method processes commands through the http tools_invoke.go interface, it fails to properly validate or escape parameters that could contain malicious payloads. This allows an attacker to manipulate the execution flow and potentially extract sensitive information from the system. The flaw operates at the application layer and could be classified under CWE-20 for Improper Input Validation, with potential implications for CWE-200 for Exposure of Sensitive Information.
Operationally, this vulnerability poses significant risks to organizations using GoClaw tools, as it enables remote attackers to access confidential data through the compromised jq Handler component. The published exploit demonstrates that threat actors have already developed working tools to leverage this weakness, increasing the urgency for remediation. Organizations may experience data breaches, intellectual property theft, or regulatory compliance violations if this vulnerability remains unpatched. The impact extends beyond immediate information disclosure to potential lateral movement within networks where such tools are deployed.
Security practitioners should immediately implement the available patch version 1230 to address this vulnerability. Additionally, network segmentation and access controls should be strengthened around systems running GoClaw to limit exposure surfaces. The mitigation strategy should include monitoring for suspicious activity patterns that may indicate exploitation attempts, particularly in http request logs showing unusual parameter patterns targeting the tools_invoke.go endpoint. Organizations should also consider implementing web application firewalls to detect and block malicious payloads attempting to exploit this specific vulnerability, aligning with ATT&CK technique T1059.007 for Command and Scripting Interpreter and T1071.004 for Application Layer Protocol. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other components of the software stack that may present comparable attack vectors.