CVE-2026-14716 in GoClaw
Summary
by MITRE • 07/05/2026
A security vulnerability has been detected in nextlevelbuilder GoClaw up to 3.13.0-beta.2. Impacted is the function MethodRouter.Handle of the file internal/gateway/router.go of the component WebSocket RPC Handler. Such manipulation leads to incorrect authorization. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report.
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Analysis
by VulDB Data Team • 07/06/2026
The security vulnerability identified in nextlevelbuilder GoClaw version 3.13.0-beta.2 represents a critical authorization flaw within the WebSocket RPC Handler component that could enable remote attackers to bypass legitimate access controls. This vulnerability specifically affects the MethodRouter.Handle function located in internal/gateway/router.go, which serves as the core routing mechanism for WebSocket-based remote procedure calls. The flaw allows malicious actors to manipulate the authorization flow during method execution, potentially granting unauthorized access to protected system functions and data. Given that this is a WebSocket RPC handler component, the vulnerability could impact real-time communication channels and pose significant risks to system integrity and confidentiality.
The technical implementation of this vulnerability stems from insufficient input validation and improper authorization checks within the MethodRouter.Handle function. When processing incoming WebSocket requests, the router fails to properly validate method parameters or verify caller credentials before executing sensitive operations. This weakness creates an attack surface where remote adversaries can craft malicious requests that bypass normal authentication mechanisms. The vulnerability's classification aligns with CWE-285: Improper Authorization, which specifically addresses situations where systems fail to properly enforce access controls for protected resources. The flaw demonstrates characteristics consistent with privilege escalation vulnerabilities where a user or attacker can perform actions beyond their intended permissions through manipulation of the authorization flow.
The operational impact of this vulnerability extends beyond simple unauthorized access, potentially enabling complete system compromise through remote code execution or data exfiltration capabilities. Attackers exploiting this flaw could manipulate the WebSocket RPC handler to execute arbitrary commands, access sensitive configuration data, or disrupt system operations. The public disclosure of exploit code further amplifies the risk, as it provides readily available tools for malicious actors to leverage this vulnerability without requiring advanced technical skills. Organizations relying on GoClaw versions up to 3.13.0-beta.2 face immediate operational threats, particularly in environments where WebSocket communication is critical for system functionality and where unauthorized access could result in significant financial or reputational damage.
Mitigation strategies should prioritize immediate patching of the affected component to address the authorization flaw in MethodRouter.Handle function. Organizations must implement comprehensive network segmentation to limit WebSocket RPC handler exposure and deploy additional authentication layers such as API keys or token-based validation. The implementation of proper input sanitization and parameter validation within the router component would prevent malicious manipulation of authorization flows. Security monitoring should include detection of unusual WebSocket traffic patterns and unauthorized method execution attempts. Additionally, organizations should consider implementing the principle of least privilege for WebSocket connections and establish regular security audits of RPC handler implementations. This vulnerability highlights the importance of applying security controls such as those recommended in MITRE ATT&CK framework under T1078 Valid Accounts and T1566 Phishing, as unauthorized access often occurs through legitimate credentials that have been compromised or through exploitation of authorization flaws.